Hello. It seems not to work.
I configured eth0 (@ip 192.168.3.91, lan 100Mb/s) for the Web interface and I put eth1 in vmbr0 (@ip 10.0.10.91, lan 1Gb/s).
Eth1 is connected to node 2 by a crossed cable (iperf results 936Mb/s for eth1 and 91.5 Mb/s for eth0).
During a live migration, the traffic still uses eth0 (migration speed 48.76 MB/s downtime 134ms).
I also configured migration_unsecure in datacenter.cfg but live migration still starting ssh migration tunnel.
I use proxmox 3.2-4
I have suggested changing a web-interface NIC and not cluster NIC.