Comment 3 for bug 1823023

it's weird that routers were scheduled to compute nodes - we usually suggested using either standalone net nodes or controllers as destination for L3 agents

Also we haven't seen issues like that really for a while now. Since Rocky is not supported and reach it's End Of Life, at this point there is no way to help you out with the issue as of today.
But I suppose that it was fixed, as things work pretty much stable today.

Please feel free to bump this bug report or open a new one in case of simmilar issues in the future.