vlab CI random connectivity failure: should be reachable but ping failed

[pau-hedgehog]

In https://github.com/githedgehog/fabricator/actions/runs/12853040645/job/35835812051

12:12:09 ERR Error(s) during testing connectivity
12:12:09 ERR Error key=vpcpeer--server-06--server-05 err="checking ping from server-06 to server-05: should be reachable but ping failed with output: PING 10.0.5.2 (10.0.5.2) 56(84) bytes of data.\n\n--- 10.0.5.2 ping statistics ---\n5 packets transmitted, 0 received, 100% packet loss, time 4118ms"
12:12:09 ERR Error key=vpcpeer--server-07--server-08 err="checking ping from server-07 to server-08: should be reachable but ping failed with output: PING 10.0.8.2 (10.0.8.2) 56(84) bytes of data.\n\n--- 10.0.8.2 ping statistics ---\n5 packets transmitted, 0 received, 100% packet loss, time 4117ms"
12:12:09 ERR Error key=vpcpeer--server-05--server-06 err="checking ping from server-05 to server-06: should be reachable but ping failed with output: PING 10.0.6.2 (10.0.6.2) 56(84) bytes of data.\nFrom 10.0.5.1 icmp_seq=1 Destination Host Unreachable\n\n--- 10.0.6.2 ping statistics ---\n5 packets transmitted, 0 received, +1 errors, 100% packet loss, time 4082ms\npipe 3"
12:12:09 ERR Error key=vpcpeer--server-08--server-07 err="checking ping from server-08 to server-07: should be reachable but ping failed with output: PING 10.0.7.2 (10.0.7.2) 56(84) bytes of data.\nFrom 10.0.8.1 icmp_seq=1 Destination Net Unreachable\n\n--- 10.0.7.2 ping statistics ---\n5 packets transmitted, 0 received, +1 errors, 100% packet loss, time 4113ms"
12:12:09 WRN Error running on-ready commands err="testing connectivity: testing connectivity: testing connectivity from \"server-05\" to \"server-06\": checking ping from server-05 to server-06: should be reachable but ping failed with output: PING 10.0.6.2 (10.0.6.2) 56(84) bytes of data.\nFrom 10.0.5.1 icmp_seq=1 Destination Host Unreachable\n\n--- 10.0.6.2 ping statistics ---\n5 packets transmitted, 0 received, +1 errors, 100% packet loss, time 4082ms\npipe 3"
12:12:24 DBG Force exit with code 2 err="context canceled"
Error: Process completed with exit code 2.

Unfortunately the show-tech was still not being triggered in case of failure, so we don't have diagnostics to do a forensic for this occurrence