Comment 44 for bug 1457478

Well, there is a workaround for that problem.

That is: one should enable at least one VLAN (even unused) at the interface during nodes start-up.

To do so I have created a configuration for a fake VLAN used on `eth0':
[root@node-47 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0.50
VLAN=yes
DEVICE=eth0.50
ONBOOT=yes
BOOTPROTO=none

And uploaded that file to all the nodes rebooting them after:
for n in 48 49 50 51; do scp ifcfg-eth0.50 node-$f:/etc/sysconfig/network-scripts; ssh node-$f reboot; done

After the cluster reboot both `network verification' and `Check network connectivity from instance via floating IP' do pass.

I think this information must be included into the release notes.