Comment 4 for bug 1864963

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Pavel Szalbot (pavel-szalbot) wrote :

I have the same problem. My physical interface is LACP bond, openstack is deployed manually, compute node is running on CentOS 8.

I found out that VM responds to ping with size 5000 (probably due to multiple packets sent) even if it does not respond to standard 56 bytes payload. However this is the only traffic from external network VM responds to. Private networking is fine.

Traffic seems to be dropped in openvswitch. ICMP reply is visible on tap interface, but does not show up on qr. conntrack does not show the connection unless Larger payload is used.

Seems pretty random. I have spent many hours with it, have other compute node that works with the same setup just with slightly older kernel, but both stock 4.18.