CI: Cilium E2E Upgrade - node-to-node-encryption - captured unexpected packets #35554
Description
CI failure
It seems to have started occurring pretty frequently on scheduled runs (matrix entries 11 and 12) since yesterday:
- https://github.com/cilium/cilium/actions/runs/11518839863/job/32066517100
- https://github.com/cilium/cilium/actions/runs/11512190239/job/32046834021
- https://github.com/cilium/cilium/actions/runs/11507425344/job/32033587309
- https://github.com/cilium/cilium/actions/runs/11499967981/job/32009153158
❌ Captured unexpected packets (count=2 packets)
ℹ️ Capture executed on cilium-test-2/host-netns-4mwr9 (kind-worker): tcpdump -i eth0 --immediate-mode -w /tmp/node-to-node-encryption.pcap ((udp and (udp[8:2] = 0x0800 or dst port 8472 or dst port 6081)) and host 172.18.0.2 and host 172.18.0.5) or (host 172.18.0.2 and host 172.18.0.5 and icmp)
ℹ️ Captured packets:
13:26:27.230010 IP kind-worker > 172.18.0.5: ICMP echo request, id 1, seq 1, length 64
13:26:27.230210 IP 172.18.0.5 > kind-worker: ICMP echo reply, id 1, seq 1, length 64