[ovirt-users] ovirt 4.1: migrate vm to node 2 results in lost connectivity

Hi all, I have a simple 3 node ovirt 4.1 gluster. All works fine but when I create or move a vm to node 2 the connection is lost, if I move the vm back to node 1 all works fine again. Looking to ovirt engine, network seems identical (for now I have only ovirtmng network). If I ping something from node 2, ping works fine (internet in general). Where can I check also? thank you