Hi Pavel, Can you explain how did you find the issue. I'm new in OVN and I experience the same symptoms . I'm not sure what will be the best approach to start cleanly with OVN. Best Regards, Strahil NikolovOn Dec 10, 2019 19:06, Pavel Nakonechnyi <pavel@gremwell.com> wrote:

Hi Pavel Nakonechnyi,

...

However, if such VMs are on different hosts, then no packets are received on both VMs.

Could you please suggest me a way to properly debug and fix this problem? I would like to be able to distribute several VMs connected to the single virtual network across hosts.

It appears that the problem was (as usual) with my setup which is a bit messy as it was based on experimental environment. The issues was triggered by changing the IP address of one of the hosts. I actually just added an alias to ovrtmgmnt  interface and then changed the IP via oVirt engine...

Anyway, command `ovs-vsctl list Interface` showed that one of the switch peers was still referenced by the old, unused IP address. The easiest way to fix it for me was to re-add the host to cluster. After that cross-host communication between VMs started to work properly.

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