[pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled

[Dietmar Maurer]

> @Dietmar
> 
> Maybe the upgrade should be done like this:
> 
> - disable igmp snooping on physical switches (if user use it)
> 
> - upgrade kernel of each node and reboot them. (they should communicate with
> old and newer kernel)
> 
> - re-enable igmp snooping on physical switch when all nodes are upgraded

I first need to debug corosync here next week - I still not understand whats happens.