Broadcast traffic in vmbr1 (not vmbr0)

[anigwei]

Hi!

I have a 7 node cluster and all nodes have eth0 mapped to 172.26.x Internal network (vmbr0) and all have a vmbr1 bridge which involves eth1 (for public network) assignable to VMs. All cluster-traffic goes into vmbr0. Ok!

But I've discovered some broadcast traffic in our public network, and the MAC belongs to our Proxmox nodes.

The strange thing is that broadcasts belongs to eth1 interface (which, as I said, is inside vmbr1 bridge, no IP assigned and not used for cluster-stuff).

Is there any way of control this?

Should all broadcast transit drive only into eth0-vmbr0, isn't it?


Thanks!

 

[anigwei]

Hi,

I have to add that Snort is detecting "BAD-TRAFFIC same SRC/DST" issues caused by "eth1" devices in all Proxmox nodes.

The strange thing is that the broadcast address IS NOT the cluster one (in my case 239.192...). The network flooding of Broadcasts IP is 224.0.0.1.

Anyone has some information about it?

Thanks!