./ip-change.bt (qwen)

想要捕获 ip 变化的

2025-11-12 11:15:00: IFINDEX 1 DEL IP 127.0.0.1
/home/martins3/data/vn/code/trace/bpftrace/ip-change.bt:24:5-31: WARNING: Can't delete map element because it does not exist.
Additional Info - helper: map_delete_elem, retcode: -2
    delete(@last_ip[$ifindex]);
    ~~~~~~~~~~~~~~~~~~~~~~~~~~
2025-11-12 11:38:16: IFINDEX 1 ADD IP 127.0.0.1
2025-11-12 11:38:16: IFINDEX 1 CHANGE IP 127.0.0.1 -> 127.0.0.1
2025-11-12 11:38:59: IFINDEX 1 DEL IP 127.0.0.1
2025-11-12 12:29:27: IFINDEX 2 DEL IP 192.168.2.167
/home/martins3/data/vn/code/trace/bpftrace/ip-change.bt:24:5-31: WARNING: Can't delete map element because it does not exist.
Additional Info - helper: map_delete_elem, retcode: -2
    delete(@last_ip[$ifindex]);
    ~~~~~~~~~~~~~~~~~~~~~~~~~~
2025-11-12 12:29:27: IFINDEX 2 ADD IP 192.168.2.122
2025-11-12 12:35:36: IFINDEX 1 ADD IP 127.0.0.1
2025-11-12 12:35:36: IFINDEX 1 CHANGE IP 127.0.0.1 -> 127.0.0.1
2025-11-12 12:36:07: IFINDEX 1 DEL IP 127.0.0.1
2025-11-12 12:36:24: IFINDEX 1 ADD IP 127.0.0.1
2025-11-12 12:36:24: IFINDEX 1 CHANGE IP 127.0.0.1 -> 127.0.0.1
2025-11-12 12:36:54: IFINDEX 1 DEL IP 127.0.0.1

成功观察到 192.168.2.167 变为 192.168.2.122 ，也就是无线网卡的 ip 变化了。

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