mozillazg/ptcpdump

GitHub: mozillazg/ptcpdump

基于 eBPF 的增强版 tcpdump，自动为捕获的网络数据包附加进程、容器和 Pod 元数据，解决传统抓包无法关联流量归属的问题。

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# ptcpdump

[![amd64-e2e](https://img.shields.io/github/actions/workflow/status/mozillazg/ptcpdump/test.yml?label=x86_64%20(amd64)%20e2e)](https://github.com/mozillazg/ptcpdump/actions/workflows/test.yml) [![arm64-e2e](https://img.shields.io/circleci/build/gh/mozillazg/ptcpdump/master?label=aarch64%20(arm64)%20e2e)](https://app.circleci.com/pipelines/github/mozillazg/ptcpdump?branch=master) [![Release](https://img.shields.io/github/v/release/mozillazg/ptcpdump)](https://github.com/mozillazg/ptcpdump/releases) ![Coveralls](https://img.shields.io/coverallsCoverage/github/mozillazg/ptcpdump?branch=master) English | [中文](README.zh-CN.md) ptcpdump is a tcpdump-compatible packet analyzer powered by eBPF, automatically annotating packets with process/container/pod metadata when detectable. Inspired by [jschwinger233/skbdump](https://github.com/jschwinger233/skbdump). ![](https://static.pigsec.cn/wp-content/uploads/repos/cas/6d/6d52bed5b575574c6bbd8b308735024ee2ebecbc162b6f1864b83785a7bda7ae.png) # Table of Contents * [Features](#features) * [Installation](#installation) * [Requirements](#requirements) * [Usage](#usage) * [Example commands](#example-commands) * [Example output](#example-output) * [Running with Docker](#running-with-docker) * [Backend](#backend) * [Flags](#flags) * [Compare with tcpdump](#compare-with-tcpdump) * [Developing](#developing) * [Dependencies](#dependencies) * [Building](#building) * [Related Projects](#related-projects) * [Flownix](#flownix) ## Features * 🔍 Process/container/pod-aware packet capture. * 📦 Filter by: `--pid` (process), `--pname` (process name), `--container-id` (container), `--pod-name` (pod). * 🎯 tcpdump-compatible flags (`-i`, `-w`, `-c`, `-s`, `-n`, `-C`, `-W`, `-A`, and more). * 📜 Supports `pcap-filter(7)` syntax like tcpdump. * 🌳 tcpdump-like output + process/container/pod context. * 📑 Verbose mode shows detailed metadata for processes and containers/pods. * 💾 PcapNG with embedded metadata (Wireshark-ready). * 🌐 Cross-namespace capture (`--netns`). * 🚀 Kernel-space BPF filtering (low overhead, reduces CPU usage). * ⚡ Container runtime integration (Docker, containerd). ## Installation You can download the statically linked executable for x86_64 and arm64 from the [releases page](https://github.com/mozillazg/ptcpdump/releases). ### Requirements Linux kernel >= 5.2 (compiled with BPF and BTF support).

`ptcpdump` optionally requires debugfs. It has to be mounted in /sys/kernel/debug. In case the folder is empty, it can be mounted with: mount -t debugfs none /sys/kernel/debug The following kernel configuration is required. Building as Modules is also possible. | Option | Backend | Note | |---------------------------|---------------------------|------------------------| | CONFIG_BPF=y | both | **Required** | | CONFIG_BPF_SYSCALL=y | both | **Required** | | CONFIG_DEBUG_INFO=y | both | **Required** | | CONFIG_DEBUG_INFO_BTF=y | both | **Required** | | CONFIG_KPROBES=y | both | **Required** | | CONFIG_KPROBE_EVENTS=y | both | **Required** | | CONFIG_TRACEPOINTS=y | both | **Required** | | CONFIG_PERF_EVENTS=y | both | **Required** | | CONFIG_NET=y | both | **Required** | | CONFIG_NET_SCHED=y | tc | **Required** | | CONFIG_NET_CLS_BPF=y | tc | **Required** | | CONFIG_NET_ACT_BPF=y | tc | **Required** | | CONFIG_NET_SCH_INGRESS=y | tc | **Required** | | CONFIG_CGROUPS=y | cgroup-skb | **Required** | | CONFIG_CGROUP_BPF=y | cgroup-skb | **Required** | | CONFIG_FILTER=y | socket-filter | **Required** | | CONFIG_BPF_TRAMPOLINE=y | tp-btf | **Required** | | CONFIG_SECURITY=y | both | Optional (Recommended) | | CONFIG_BPF_TRAMPOLINE=y | both | Optional (Recommended) | | CONFIG_SOCK_CGROUP_DATA=y | both | Optional (Recommended) | | CONFIG_BPF_JIT=y | both | Optional (Recommended) | | CONFIG_CGROUP_BPF=y | tc, tp-btf, socket-filter | Optional (Recommended) | | CONFIG_CGROUPS=y | tc, tp-btf, socket-filter | Optional (Recommended) | You can use `zgrep $OPTION /proc/config.gz` to validate whether an option is enabled.

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## Usage ### Example commands Filter like tcpdump: sudo ptcpdump -i eth0 tcp sudo ptcpdump -i eth0 -A -s 0 -n -v tcp and port 80 and host 10.10.1.1 sudo ptcpdump -i any -s 0 -n -v -C 100MB -W 3 -w test.pcapng 'tcp and port 80 and host 10.10.1.1' sudo ptcpdump -i eth0 'tcp[tcpflags] & (tcp-syn|tcp-fin) != 0' Multiple interfaces: sudo ptcpdump -i eth0 -i lo Filter by process or user: sudo ptcpdump -i any --pid 1234 --pid 233 -f sudo ptcpdump -i any --pname curl sudo ptcpdump -i any --uid 1000 Capture by process via run target program: sudo ptcpdump -i any -- curl ubuntu.com Filter by container or pod: sudo ptcpdump -i any --container-id 36f0310403b1 sudo ptcpdump -i any --container-name test sudo ptcpdump -i any --pod-name test.default Save data in PcapNG format: sudo ptcpdump -i any -w demo.pcapng sudo ptcpdump -i any -w - port 80 | tcpdump -n -r - sudo ptcpdump -i any -w - port 80 | tshark -r - Capturing interfaces in other network namespaces: sudo ptcpdump -i lo --netns /run/netns/foo --netns /run/netns/bar sudo ptcpdump -i any --netns /run/netns/foobar sudo ptcpdump -i any --netns /proc/26/ns/net

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### Example output Default: 09:32:09.718892 vethee2a302f wget.3553008 In IP 10.244.0.2.33426 > 139.178.84.217.80: Flags [S], seq 4113492822, win 64240, length 0, ParentProc [python3.834381], Container [test], Pod [test.default] 09:32:09.718941 eth0 wget.3553008 Out IP 172.19.0.2.33426 > 139.178.84.217.80: Flags [S], seq 4113492822, win 64240, length 0, ParentProc [python3.834381], Container [test], Pod [test.default] With `-q`: 09:32:09.718892 vethee2a302f wget.3553008 In IP 10.244.0.2.33426 > 139.178.84.217.80: tcp 0, ParentProc [python3.834381], Container [test], Pod [test.default] 09:32:09.718941 eth0 wget.3553008 Out IP 172.19.0.2.33426 > 139.178.84.217.80: tcp 0, ParentProc [python3.834381], Container [test], Pod [test.default] With `-v`: 13:44:41.529003 eth0 In IP (tos 0x4, ttl 45, id 45428, offset 0, flags [DF], proto TCP (6), length 52) 139.178.84.217.443 > 172.19.0.2.42606: Flags [.], cksum 0x5284, seq 3173118145, ack 1385712707, win 118, options [nop,nop,TS val 134560683 ecr 1627716996], length 0 Process (pid 553587, cmd /usr/bin/wget, args wget kernel.org) User (uid 1000) ParentProc (pid 553296, cmd /bin/sh, args sh) Container (name test, id d9028334568bf75a5a084963a8f98f78c56bba7f45f823b3780a135b71b91e95, image docker.io/library/alpine:3.18, labels {"io.cri-containerd.kind":"container","io.kubernetes.container.name":"test","io.kubernetes.pod.name":"test","io.kubernetes.pod.namespace":"default","io.kubernetes.pod.uid":"9e4bc54b-de48-4b1c-8b9e-54709f67ed0c"}) Pod (name test, namespace default, UID 9e4bc54b-de48-4b1c-8b9e-54709f67ed0c, labels {"run":"test"}, annotations {"kubernetes.io/config.seen":"2024-07-21T12:41:00.460249620Z","kubernetes.io/config.source":"api"}) Using `--context` to limit context to include in the output:

# --context=process 09:32:09.718892 vethee2a302f wget.3553008 In IP 10.244.0.2.33426 > 139.178.84.217.80: Flags [S], seq 4113492822, win 64240, length 0 # -v --context=process 13:44:41.529003 eth0 In IP (tos 0x4, ttl 45, id 45428, offset 0, flags [DF], proto TCP (6), length 52) 139.178.84.217.443 > 172.19.0.2.42606: Flags [.], cksum 0x5284, seq 3173118145, ack 1385712707, win 118, options [nop,nop,TS val 134560683 ecr 1627716996], length 0 Process (pid 553587, cmd /usr/bin/wget, args wget kernel.org) # -v --context=process,parentproc,container,pod # or -v --context=process --context=parentproc --context=container --context=pod 13:44:41.529003 eth0 In IP (tos 0x4, ttl 45, id 45428, offset 0, flags [DF], proto TCP (6), length 52) 139.178.84.217.443 > 172.19.0.2.42606: Flags [.], cksum 0x5284, seq 3173118145, ack 1385712707, win 118, options [nop,nop,TS val 134560683 ecr 1627716996], length 0 Process (pid 553587, cmd /usr/bin/wget, args wget kernel.org) ParentProc (pid 553296, cmd /bin/sh, args sh) Container (name test, id d9028334568bf75a5a084963a8f98f78c56bba7f45f823b3780a135b71b91e95, image docker.io/library/alpine:3.18, labels {"io.cri-containerd.kind":"container","io.kubernetes.container.name":"test","io.kubernetes.pod.name":"test","io.kubernetes.pod.namespace":"default","io.kubernetes.pod.uid":"9e4bc54b-de48-4b1c-8b9e-54709f67ed0c"}) Pod (name test, namespace default, UID 9e4bc54b-de48-4b1c-8b9e-54709f67ed0c, labels {"run":"test"}, annotations {"kubernetes.io/config.seen":"2024-07-21T12:41:00.460249620Z","kubernetes.io/config.source":"api"})

With `-A`: 14:44:34.457504 ens33 curl.205562 Out IP 10.0.2.15.39984 > 139.178.84.217.80: Flags [P.], seq 2722472188:2722472262, ack 892036871, win 64240, length 74, ParentProc [bash.180205] E..r.,@.@.o. .....T..0.P.E..5+g.P.......GET / HTTP/1.1 Host: kernel.org User-Agent: curl/7.81.0 Accept: */* With `-x`: 14:44:34.457504 ens33 curl.205562 Out IP 10.0.2.15.39984 > 139.178.84.217.80: Flags [P.], seq 2722472188:2722472262, ack 892036871, win 64240, length 74, ParentProc [bash.180205] 0x0000: 4500 0072 de2c 4000 4006 6fbf 0a00 020f 0x0010: 8bb2 54d9 9c30 0050 a245 a0fc 352b 6707 0x0020: 5018 faf0 ecfe 0000 4745 5420 2f20 4854 0x0030: 5450 2f31 2e31 0d0a 486f 7374 3a20 6b65 0x0040: 726e 656c 2e6f 7267 0d0a 5573 6572 2d41 0x0050: 6765 6e74 3a20 6375 726c 2f37 2e38 312e 0x0060: 300d 0a41 6363 6570 743a 202a 2f2a 0d0a 0x0070: 0d0a With `-X`: 14:44:34.457504 ens33 curl.205562 Out IP 10.0.2.15.39984 > 139.178.84.217.80: Flags [P.], seq 2722472188:2722472262, ack 892036871, win 64240, length 74, ParentProc [bash.180205] 0x0000: 4500 0072 de2c 4000 4006 6fbf 0a00 020f E..r.,@.@.o..... 0x0010: 8bb2 54d9 9c30 0050 a245 a0fc 352b 6707 ..T..0.P.E..5+g. 0x0020: 5018 faf0 ecfe 0000 4745 5420 2f20 4854 P.......GET / HT 0x0030: 5450 2f31 2e31 0d0a 486f 7374 3a20 6b65 TP/1.1..Host: ke 0x0040: 726e 656c 2e6f 7267 0d0a 5573 6572 2d41 rnel.org..User-A 0x0050: 6765 6e74 3a20 6375 726c 2f37 2e38 312e gent: curl/7.81. 0x0060: 300d 0a41 6363 6570 743a 202a 2f2a 0d0a 0..Accept: */*.. 0x0070: 0d0a ..

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### Running with Docker Docker images for `ptcpdump` are published at https://quay.io/repository/ptcpdump/ptcpdump. docker run --privileged --rm -t --net=host --pid=host \ -v /sys/fs/cgroup:/sys/fs/cgroup:ro \ -v /var/run:/var/run:ro \ -v /run:/run:ro \ quay.io/ptcpdump/ptcpdump:latest ptcpdump -i any -c 2 tcp

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### Backend ptcpdump supports specifying a particular eBPF technology for packet capture through the `--backend` flag. | | `tc` | `cgroup-skb` | `socket-filter` | `tp-btf` | |-------------------------|---------------------------|----------------------------|-------------------------------|-------------------------| | eBPF Program Type | `BPF_PROG_TYPE_SCHED_CLS` | `BPF_PROG_TYPE_CGROUP_SKB` | `BPF_PROG_TYPE_SOCKET_FILTER` | `BPF_PROG_TYPE_TRACING` | | L2 data | ✅ | ❌ | ✅ | ✅ | | Cross network namespace | ❌ | ✅ | ❌ | ✅ | | Kernel version | 5.2+ | 5.2+ | 5.4+ | 5.5+ | | cgroup v2 | Recommended | **Required** | Recommended | Recommended | If this flag isn't specified, it defaults to `tc`.

* Running `curl http://1.1.1.1` on the host:

* `--backend tc`: $ sudo ptcpdump -i any --backend tc host 1.1.1.1 12:11:28.009276 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [S], seq 615672474, win 64240, options [mss 1460,sackOK,TS val 2168208063 ecr 0,nop,wscale 7], length 0, ParentProc [bash.321004] 12:11:28.113779 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [S.], seq 1810787293, ack 615672475, win 64240, options [mss 1460], length 0, ParentProc [bash.321004] 12:11:28.113852 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672475, ack 1810787294, win 64240, length 0, ParentProc [bash.321004] 12:11:28.114216 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [P.], seq 615672475:615672545, ack 1810787294, win 64240, length 70, ParentProc [bash.321004] 12:11:28.115383 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [.], seq 1810787294, ack 615672545, win 64240, length 0, ParentProc [bash.321004] 12:11:28.534486 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [P.], seq 1810787294:1810787680, ack 615672545, win 64240, length 386, ParentProc [bash.321004] 12:11:28.534751 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672545, ack 1810787680, win 63854, length 0, ParentProc [bash.321004] 12:11:28.536982 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [F.], seq 615672545, ack 1810787680, win 63854, length 0, ParentProc [bash.321004] 12:11:28.538160 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [.], seq 1810787680, ack 615672546, win 64239, length 0, ParentProc [bash.321004] 12:11:28.642291 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [FP.], seq 1810787680, ack 615672546, win 64239, length 0, ParentProc [bash.321004] 12:11:28.642511 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672546, ack 1810787681, win 63854, length 0, ParentProc [bash.321004] * `--backend cgroup-skb`: $ sudo ptcpdump -i any --backend cgroup-skb host 1.1.1.1 12:11:28.009182 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [S], seq 615672474, win 64240, options [mss 146063 ecr 0,nop,wscale 7], length 0, Thread [curl.402475], ParentProc [bash.321004] 12:11:28.113815 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [S.], seq 1810787293, ack 615672475, win 64240, gth 0, ParentProc [bash.321004] 12:11:28.113849 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672475, ack 1810787294, win 64240, ash.321004] 12:11:28.114212 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [P.], seq 615672475:615672545, ack 1810787294, hread [curl.402475], ParentProc [bash.321004] 12:11:28.115409 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [.], seq 1810787294, ack 615672545, win 64240, lsh.321004] 12:11:28.534596 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [P.], seq 1810787294:1810787680, ack 615672545, ParentProc [bash.321004] 12:11:28.534738 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672545, ack 1810787680, win 63854, ash.321004] 12:11:28.536967 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [F.], seq 615672545, ack 1810787680, win 63854,.402475], ParentProc [bash.321004] 12:11:28.538189 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [.], seq 1810787680, ack 615672546, win 64239, lsh.321004] 12:11:28.642419 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672546, ack 1810787681, win 63854, ash.321004] * `--backend socket-filter`: $ sudo ptcpdump -i any --backend socket-filter host 1.1.1.1 12:11:28.009426 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [S], seq 615672474, win 64240, options [mss 146063 ecr 0,nop,wscale 7], length 0, ParentProc [bash.321004] 12:11:28.113762 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [S.], seq 1810787293, ack 615672475, win 64240, gth 0, ParentProc [bash.321004] 12:11:28.113861 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672475, ack 1810787294, win 64240, ash.321004] 12:11:28.114503 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [P.], seq 615672475:615672545, ack 1810787294, arentProc [bash.321004] 12:11:28.115335 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [.], seq 1810787294, ack 615672545, win 64240, lsh.321004] 12:11:28.534424 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [P.], seq 1810787294:1810787680, ack 615672545, ParentProc [bash.321004] 12:11:28.534825 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672545, ack 1810787680, win 63854, ash.321004] 12:11:28.537088 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [F.], seq 615672545, ack 1810787680, win 63854,bash.321004] 12:11:28.538153 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [.], seq 1810787680, ack 615672546, win 64239, lsh.321004] 12:11:28.642247 ens33 curl.402475 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [FP.], seq 1810787680, ack 615672546, win 64239,bash.321004] 12:11:28.642537 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672546, ack 1810787681, win 63854, ash.321004] * `--backend tp-btf`: $ sudo ptcpdump -i any --backend tp-btf host 1.1.1.1 12:11:28.009353 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [S], seq 615672474, win 64240, options [mss 146063 ecr 0,nop,wscale 7], length 0, ParentProc [bash.321004] 12:11:28.113739 ens33 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [S.], seq 1810787293, ack 615672475, win 64240, options [mss 12:11:28.113857 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672475, ack 1810787294, win 64240, ash.321004] 12:11:28.114225 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [P.], seq 615672475:615672545, ack 1810787294, arentProc [bash.321004] 12:11:28.115242 ens33 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [.], seq 1810787294, ack 615672545, win 64240, length 0 12:11:28.534245 ens33 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [P.], seq 1810787294:1810787680, ack 615672545, win 64240, l 12:11:28.534768 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672545, ack 1810787680, win 63854, ash.321004] 12:11:28.537038 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [F.], seq 615672545, ack 1810787680, win 63854,bash.321004] 12:11:28.538129 ens33 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [.], seq 1810787680, ack 615672546, win 64239, length 0 12:11:28.642088 ens33 In IP 1.1.1.1.80 > 10.0.2.15.48448: Flags [FP.], seq 1810787680, ack 615672546, win 64239, length 0 12:11:28.642523 ens33 curl.402475 Out IP 10.0.2.15.48448 > 1.1.1.1.80: Flags [.], seq 615672546, ack 1810787681, win 63854, ash.321004]

* Running `curl http://1.1.1.1` in a docker container:

* `--backend tc`: $ sudo ptcpdump -i any --backend tc host 1.1.1.1 12:20:31.336397 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.336533 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.336794 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0 12:20:31.468027 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0 12:20:31.467769 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.467781 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468025 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468042 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468061 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0 12:20:31.468089 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468093 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468110 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71 12:20:31.468464 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0 12:20:31.468535 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468558 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575461 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386 12:20:31.575576 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575613 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575877 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575890 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575916 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0 12:20:31.577079 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577107 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577146 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0 12:20:31.577736 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0 12:20:31.577761 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577773 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687029 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0 12:20:31.687166 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687214 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687398 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687413 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687453 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0 * `--backend cgroup-skb`: $ sudo ptcpdump -i any --backend cgroup-skb host 1.1.1.1 12:20:31.336108 45@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0, Thread [curl.405939], ParentProc [bash.405653], Container [musing_banach] 12:20:31.467819 45@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.467876 45@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468072 45@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71, Thread [curl.405939], ParentProc [bash.405653], Container [musing_banach] 12:20:31.468681 45@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575750 45@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575848 45@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.576982 45@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0, Thread [curl.405939], ParentProc [bash.405653], Container [musing_banach] 12:20:31.577843 45@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687357 45@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] * `--backend socket-filter`: $ sudo ptcpdump -i any --backend socket-filter host 1.1.1.1 12:20:31.336456 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.336818 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0 12:20:31.467700 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0 12:20:31.467776 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.467784 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468030 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468066 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0 12:20:31.468092 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468122 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71 12:20:31.468461 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0 12:20:31.468552 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468565 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575416 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386 12:20:31.575601 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575623 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575889 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575928 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0 12:20:31.577085 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577153 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0 12:20:31.577733 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0 12:20:31.577770 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577778 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687015 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0 12:20:31.687206 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687223 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687409 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687464 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0 * `--backend tp-btf`: $ sudo ptcpdump -i any --backend tp-btf host 1.1.1.1 12:20:31.336316 eth0@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.336382 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.336443 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.336801 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [S], seq 3064539219, win 64240, options [mss 1460,sackOK,TS val 1731159046 ecr 0,nop,wscale 7], length 0 12:20:31.467682 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0 12:20:31.467773 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.467783 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.467811 eth0@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [S.], seq 488132001, ack 3064539220, win 64240, options [mss 1460], length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468005 eth0@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468022 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468029 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468063 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539220, ack 488132002, win 64240, length 0 12:20:31.468078 eth0@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468085 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468091 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468112 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [P.], seq 3064539220:3064539291, ack 488132002, win 64240, length 71 12:20:31.468446 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0 12:20:31.468543 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468562 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.468668 eth0@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132002, ack 3064539291, win 64240, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575358 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386 12:20:31.575586 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575617 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575732 eth0@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [P.], seq 488132002:488132388, ack 3064539291, win 64240, length 386, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575855 eth0@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575870 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575883 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.575920 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539291, ack 488132388, win 63854, length 0 12:20:31.577059 eth0@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577074 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577082 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577148 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [F.], seq 3064539291, ack 488132388, win 63854, length 0 12:20:31.577704 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0 12:20:31.577764 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577774 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.577835 eth0@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.686955 ens33 In IP 1.1.1.1.80 > 10.0.2.15.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0 12:20:31.687183 docker0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687218 veth1d387b0 curl.405939 Out IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687316 eth0@4026533097 curl.405939 In IP 1.1.1.1.80 > 172.17.0.4.38670: Flags [FP.], seq 488132388, ack 3064539292, win 64239, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687369 eth0@4026533097 curl.405939 Out IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687388 veth1d387b0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687404 docker0 curl.405939 In IP 172.17.0.4.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0, ParentProc [bash.405653], Container [musing_banach] 12:20:31.687457 ens33 Out IP 10.0.2.15.38670 > 1.1.1.1.80: Flags [.], seq 3064539292, ack 488132389, win 63854, length 0

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### Flags

Usage: ptcpdump [flags] [expression] [-- command [args]] Examples: sudo ptcpdump -i any tcp sudo ptcpdump -i eth0 -i lo sudo ptcpdump -i eth0 --pid 1234 port 80 and host 10.10.1.1 sudo ptcpdump -i any --pname curl -A sudo ptcpdump -i any --container-id 36f0310403b1 sudo ptcpdump -i any --container-name test sudo ptcpdump -i any -- curl ubuntu.com sudo ptcpdump -i any -w ptcpdump.pcapng sudo ptcpdump -i any -w - | tcpdump -n -r - sudo ptcpdump -i any -w - | tshark -r - ptcpdump -r ptcpdump.pcapng Expression: see "man 7 pcap-filter" Flags: -S, --absolute-tcp-sequence-numbers Print absolute, rather than relative, TCP sequence numbers. --backend string Specify the backend to use for capturing packets. Possible values are "tc", "cgroup-skb", "tp-btf" and "socket-filter" (default "tc") --container-id string Filter by container id (only TCP and UDP packets are supported) --container-name string Filter by container name (only TCP and UDP packets are supported) --containerd-address string Address of containerd service (default "/run/containerd/containerd.sock") --context strings Specify which context information to include in the output (default [process,thread,parentproc,user,container,pod]) --count Print only on stdout the packet count when reading capture file instead of parsing/printing the packets --cri-runtime-address string Address of CRI container runtime service (default: uses in order the first successful one of [/var/run/dockershim.sock, /var/run/cri-dockerd.sock, /run/crio/crio.sock, /run/containerd/containerd.sock]) --delay-before-handle-packet-events duration Delay some durations before handle packet events -Q, --direction string Choose send/receive direction for which packets should be captured. Possible values are 'in', 'out' and 'inout' (default "inout") --disable-reverse-match Disable reverse match for TCP and UDP packets. --docker-address string Address of Docker Engine service (default "/var/run/docker.sock") --embed-keylog-to-pcapng -- CMD [ARGS] Write TLS Key Log file to this path (experimental: only support unstripped Go binary and must combined with -- CMD [ARGS]) --event-chan-size uint Size of event chan (default 20) --exec-events-worker-number uint Number of worker to handle exec events (default 50) -F, --expression-file string Use file as input for the filter expression. An additional expression given on the command line is ignored. -W, --file-count uint Used in conjunction with the -C option, this will limit the number of files created to the specified number, and begin overwriting files from the beginning, thus creating a 'rotating' buffer. -C, --file-size fileSize Before writing a raw packet to a savefile, check whether the file is currently larger than file_size and, if so, close the current savefile and open a new one. Savefiles after the first savefile will have the name specified with the -w flag, with a number after it, starting at 1 and continuing upward. -f, --follow-forks Trace child processes as they are created by currently traced processes when filter by process -h, --help help for ptcpdump -i, --interface strings Interfaces to capture (default [lo]) --kernel-btf string specify kernel BTF file (default: uses in order the first successful one of [/sys/kernel/btf/vmlinux, /var/lib/ptcpdump/btf/vmlinux, /var/lib/ptcpdump/btf/vmlinux-$(uname -r), /var/lib/ptcpdump/btf/$(uname -r).btf, download BTF file from https://mirrors.openanolis.cn/coolbpf/btf/ and https://github.com/aquasecurity/btfhub-archive/] -D, --list-interfaces Print the list of the network interfaces available on the system --log-level string Set the logging level ("debug", "info", "warn", "error", "fatal") (default "warn") --micro Shorthands for --time-stamp-precision=micro --nano Shorthands for --time-stamp-precision=nano --netns strings Path to an network namespace file or name (default [/proc/self/ns/net]) -n, --no-convert-addr count Don't convert addresses (i.e., host addresses, port numbers, etc.) to names -#, --number Print an optional packet number at the beginning of the line --oneline Print parsed packet output in a single line --pid uints Filter by process IDs (only TCP and UDP packets are supported) (default []) --pname string Filter by process name (only TCP and UDP packets are supported) --pod-name string Filter by pod name (format: NAME.NAMESPACE, only TCP and UDP packets are supported) --print Print parsed packet output, even if the raw packets are being saved to a file with the -w flag -A, --print-data-in-ascii Print each packet (minus its link level header) in ASCII -x, --print-data-in-hex count When parsing and printing, in addition to printing the headers of each packet, print the data of each packet in hex -X, --print-data-in-hex-ascii count When parsing and printing, in addition to printing the headers of each packet, print the data of each packet in hex and ASCII -t, --print-timestamp count control the format of the timestamp printed in the output -q, --quiet Quiet output. Print less protocol information so output lines are shorter -r, --read-file string Read packets from file (which was created with the -w option). e.g. ptcpdump.pcapng -c, --receive-count uint Exit after receiving count packets -s, --snapshot-length uint32 Snarf snaplen bytes of data from each packet rather than the default of 262144 bytes (default 262144) --time-stamp-precision string When capturing, set the time stamp precision for the capture to the format (default "micro") --uid uints Filter by user IDs (only TCP and UDP packets are supported) (default []) -v, --verbose count When parsing and printing, produce (slightly more) verbose output --version Print the ptcpdump and libpcap version strings and exit -w, --write-file string Write the raw packets to file rather than parsing and printing them out. They can later be printed with the -r option. Standard output is used if file is '-'. e.g. ptcpdump.pcapng --write-keylog-file -- CMD [ARGS] Write TLS Key Log file to this path (experimental: only support unstripped Go binary and must combined with -- CMD [ARGS])

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## Compare with tcpdump | Options | tcpdump | ptcpdump | |---------------------------------------------------|---------|--------------------------| | *expression* | ✅ | ✅ | | -i *interface*, --interface=*interface* | ✅ | ✅ | | -w *x.pcapng* | ✅ | ✅ (with process info) | | -w *x.pcap* | ✅ | ✅ (without process info) | | -w *-* | ✅ | ✅ | | -r *x.pcapng*, -r *x.pcap* | ✅ | ✅ | | -r *-* | ✅ | ✅ | | --pid *process_id* | | ✅ | | --pname *process_name* | | ✅ | | --uid *user_id* | | ✅ | | --container-id *container_id* | | ✅ | | --container-name *container_name* | | ✅ | | --pod-name *pod_name.namespace* | | ✅ | | -f, --follow-forks | | ✅ | | -- *command [args]* | | ✅ | | --netns *path_to_net_ns* | | ✅ | | --print | ✅ | ✅ | | -A | ✅ | ✅ | | -B *bufer_size*, --buffer-size=*buffer_size* | ✅ | | | -c *count* | ✅ | ✅ | | --count | ✅ | ✅ | | -C *file_size | ✅ | ✅ | | -d | ✅ | | | -dd | ✅ | | | -ddd | ✅ | | | -D, --list-interfaces | ✅ | ✅ | | -e | ✅ | | | -f | ✅ | ⛔ | | -F *file* | ✅ | ✅ | | -G *rotate_seconds* | ✅ | | | -h, --help | ✅ | ✅ | | -H | ✅ | | | -I, --monitor-mode | ✅ | | | --immediate-mode | ✅ | | | -j *tstamp_type*, --time-stamp-type=*tstamp_type* | ✅ | | | --time-stamp-precision=*tstamp_precision* | ✅ | ✅ | | -J, --list-time-stamp-types | ✅ | | | --micro | ✅ | ✅ | | --nano | ✅ | ✅ | | -K, --dont-verify-checksums | ✅ | | | -l | ✅ | | | -L, --list-data-link-types | ✅ | | | -m *module* | ✅ | | | -M *secret* | ✅ | | | -n | ✅ | ✅ | | -N | ✅ | | | -#, --number | ✅ | ✅ | | -O, --no-optimize | ✅ | | | -p, --no-promiscuous-mode | ✅ | ⛔ | | -q | ✅ | ✅ | | -Q *direction*, --direction=*direction* | ✅ | ✅ | | -S, --absolute-tcp-sequence-numbers | ✅ | ✅ | | -s *snaplen*, --snapshot-length=*snaplen* | ✅ | ✅ | | -T *type* | ✅ | | | -t | ✅ | ✅ | | -tt | ✅ | ✅ | | -ttt | ✅ | ✅ | | -tttt | ✅ | ✅ | | -ttttt | ✅ | ✅ | | -u | ✅ | | | -U, --packet-buffered | ✅ | | | -y *datalinktype*, --linktype=*datalinktype* | ✅ | | | -v | ✅ | ✅ | | -vv | ✅ | ⭕ | | -vvv | ✅ | ⭕ | | -V *file* | ✅ | | | --version | ✅ | ✅ | | -W *filecont* | ✅ | ✅ | | -x | ✅ | ✅ | | -xx | ✅ | ✅ | | -X | ✅ | ✅ | | -XX | ✅ | ✅ | | -z *postrotate-command* | ✅ | | | -Z *user*, --relinquish-privileges=*user* | ✅ | |

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## Developing ### Dependencies Ensure you have the following dependencies installed on your system: * Go >= 1.23 * Clang/LLVM >= 14 * Bison >= 3.8 * Lex/Flex >= 2.6 * GCC * GNU make * autoconf * libelf On Debian/Ubuntu systems, you can install most of these with: sudo apt-get update sudo apt-get install -y build-essential clang llvm bison flex \ make autoconf libelf-dev ### Building Building `ptcpdump` involves two main steps: generating the eBPF bytecode (optional if you don't modify the eBPF code) and compiling the Go application. #### 1. Build the eBPF Programs (Optional) This step compiles the C eBPF code located in the `bpf/` directory into bytecode for multiple target architectures (amd64, arm64, arm). The generated bytecode is then embedded into the final `ptcpdump` Go executable. You only need to run this step if you modify the eBPF source code or if the pre-generated files are missing. * **Native Build**: Requires Clang/LLVM installed locally. make build-bpf * **Using Docker**: Use this if you don't have the required C build toolchain locally. It utilizes a pre-configured development image. make build-bpf-via-docker #### 2. Build the `ptcpdump` Executable After ensuring the eBPF bytecode are generated (or using the pre-generated ones), you can compile the main Go application. * **Static Build (Recommended)**: This builds `ptcpdump` with all its dependencies, including a bundled version of `libpcap` (from the `lib/libpcap` submodule), statically linked into the final executable. This results in a portable binary with no external library dependencies. This is the default and recommended method. * **Native Build**: This command first ensures the bundled `libpcap` is compiled and then builds the static `ptcpdump` executable. # This first builds libpcap, then builds ptcpdump statically make build * **Using Docker**: Builds the static executable inside the development container. make build-via-docker * **Dynamic Build**: This builds `ptcpdump` dynamically linked against the system's installed `libpcap` library. You must have the `libpcap` development package installed on your system beforehand (e.g., `libpcap-dev` on Debian/Ubuntu, `libpcap-devel` on Fedora/CentOS). This results in a smaller executable but requires `libpcap` to be present on the target system. # Ensure libpcap development package is installed first # e.g., sudo apt-get install libpcap-dev make build-dynamic-link The final executable will be created in the project's root directory (e.g., `./ptcpdump`).

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## Related Projects ### Flownix Flownix is a graphical, real-time, flow-based network traffic analyzer for Linux systems. It captures packets using the ptcpdump binary, extracts detailed metadata about each flow, stores it in SQLite, and visualizes everything in a clean, responsive Dash web interface.

flownix overview 1 flownix overview 2

**Repository**: [VISION-183/flownix](https://github.com/VISION-183/flownix)

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标签：eBPF, Linux, tcpdump, 客户端加密, 容器网络, 流量监控, 系统分析, 网络分析, 网络抓包