Re: FBSD 15 :: if_bridge help needed

From: Lexi Winter <ivy_at_freebsd.org>
Date: Wed, 08 Oct 2025 07:40:06 UTC
Paul Procacci wrote in <CAFbbPuiX=uzsrH8u=2+0=dEmPU1cg7SX5AwYz=hXM=4KPCrE_A@mail.gmail.com>:
> I have some debugging information that I just acquired if it helps.
> I have determined that the bridge isn't receiving arp requests that
> are being sent by Jail 1; the machine with the trunk
>
> I have also determined that the bridge *is* receiving arp requests
> from Jail 2; the machine that is labeled as 'access' or untagged.
> 
> The only difference between the two here is that in my scenario, Jail
> 1 does it's own tagging while Jail 2 doesn't and leans on the bridge
> for its `access'.
 
could you please run tcpdump -ev on the epair interface attached to the
bridge and see if the arp requests from jail 1 are received there?

i.e., i would like to know if the packets are seen correctly on the
epair interface but are being dropped by the bridge somehow.

(please show the actual tcpdump output; what i expect is that the epair
interface shows ARP packets with a .1q tag for VLAN 60.)

> Thanks Gents!

ahem