vmbr0: received packet on eno1 with own address as source address (addr:xx:xx:xx:xx:xx, vlan:0)

[moxmox]

I keep getting hundreds of these lines in my syslog - also

net_ratelimit: 4655 callbacks suppressed

when this happens I seem to get getting network disruption as well which connections hanging etc.

how can I diagnose where the issue is?

here is my network config

auto lo
iface lo inet loopback

iface enp8s0 inet manual

iface eno1 inet manual
#used by vmbr0

iface enp11s0 inet manual

iface enp9s0 inet manual

iface eno2 inet manual

auto ens3
iface ens3 inet static
        address 10.0.0.2/24
#10g network

auto vmbr0
iface vmbr0 inet static
        address 192.168.128.2/24
        gateway 192.168.128.253
        bridge-ports eno1
        bridge-stp off
        bridge-fd 0
#       bridge-ports enp0s25

interestingly I have two separate proxmox boxes which both have the same issue so I assume its something else on my network causing the issue.

 

[moxmox]

resolved it was a network loop where a cable had been looped back into a switch.