2 OPNsenses same WAN network Broadcast Flood

[aeschma]

I think it's working now! It's up and running for 8h now.

I switched the STP protocol in the unifi switches from RSTP to STP. Read somewhere that STP is the OPNSense/FreeBSD default (Perhaps the problem is by Vodafone, RSTP + "Local" CARP worked without an issue). In my switch settings was STP deactivated for the WAN port profile .... this is still the case. In tne General Settings on unifi I switched RSTP to STP.

Here are some screenshots of my current setup for people who use OPNSense with unifi switches.

The sad: Now my Multi-WAN connection drops randomly. Internal routing works without an issue but WAN routing drops for a few minutes. But I think this is an other topic ...

[aeschma]

Update:

Unfortunately the problem is still there. However, it now occurs much less frequently (approx. once a day) and no longer immediately after plugging in the 2nd firewall.

[itngo]

Did you ever solve this?

[aeschma]

Sadly, no