[PVE-User] PVE-firewall and multicast with linux bridging

[Bryan Fields]

On 6/22/25 02:22, Bryan Fields wrote:
> I've run into this multicast issue.  Even with the interface as unfirewalled,
> proxmox is blocking multicast/invalid traffic at the server and datacenter level.

did more digging on this using the TRACE tool in iptables.  I believe it's 
100% a bug at this point, as there is no way to disable these rules other than 
to disable the firewall at the cluster level.  Disabling the entire firewall 
is unacceptable.

I've updated this and filed a bug here:

https://bugzilla.proxmox.com/show_bug.cgi?id=6478


-- 
Bryan Fields

727-409-1194 - Voice
http://bryanfields.net