Re: FBSD 15 :: if_bridge help needed

On Wed, Oct 8, 2025 at 4:04 AM Paul Procacci <pprocacci@gmail.com> wrote:
>
> On Wed, Oct 8, 2025 at 3:59 AM Lexi Winter <ivy@freebsd.org> wrote:
> >
> > Paul Procacci wrote in <CAFbbPuhiLsWcjbVD9F_RH+Q+5b2BZcAnLK2h3AqiJjkcOkxaMQ@mail.gmail.com>:
> > > From hosts' perspective:
> > > -----------------------------------------------------------
> > > root@host:~ # tcpdump -ni epair0a
> > > tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
> > > listening on epair0a, link-type EN10MB (Ethernet), snapshot length 262144 bytes
> >
> > > From Jail 1's perspective:
> > > -----------------------------------------------------------
> > > root@Jail1:/ # tcpdump -ni epair0b.60
> > > tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
> > > listening on epair0b.60, link-type EN10MB (Ethernet), snapshot length
> > > 262144 bytes
> > > 07:52:03.722196 ARP, Request who-has 192.168.60.2 tell 192.168.60.1, length 28
> > > 07:52:04.785635 ARP, Request who-has 192.168.60.2 tell 192.168.60.1, length 28
> >
> > this seems like the packets are not making it out of the vlan(4)
> > interface for some reason.  could you please re-run this with
> > tcpdump -ve (it doesn't show .1q tags otherwise) and include
> > the output for both epair0b.60 and epair0b in the jail?
> >
> > also for my reference, please include the ifconfig output for
> > epair0b.60, epair0b and epair0a (i think you already showed this,
> > it's just easier to have it all together, if you don't mind).
>
> Sure.  This isn't a problem and I think you're onto something:
>
> root@fw:/ # tcpdump -nvi epair0b -e
> tcpdump: listening on epair0b, link-type EN10MB (Ethernet), snapshot
> length 262144 bytes
> ^C
> root@Jail 1:/ # tcpdump -nvi epair0b.60 -e
> tcpdump: listening on epair0b.60, link-type EN10MB (Ethernet),
> snapshot length 262144 bytes
> 08:00:29.095183 58:9c:fc:10:bb:b7 > ff:ff:ff:ff:ff:ff, ethertype ARP
> (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has
> 192.168.60.2 tell 192.168.60.1, length 28
> 08:00:30.158598 58:9c:fc:10:bb:b7 > ff:ff:ff:ff:ff:ff, ethertype ARP
> (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has
> 192.168.60.2 tell 192.168.60.1, length 28
>
>
> .... and the output of the interfaces ....
> root@Host:~ # ifconfig epair0a
> epair0a: flags=1008943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP>
> metric 0 mtu 1500
>         options=60000b<RXCSUM,TXCSUM,VLAN_MTU,RXCSUM_IPV6,TXCSUM_IPV6>
>         ether 58:9c:fc:10:8b:0f
>         groups: epair
>         media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
>         status: active
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>
>
> root@Jail 1:/ # ifconfig epair0b; ifconfig epair0b.60
> epair0b: flags=1008942<BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP>
> metric 0 mtu 1500
>         options=60000b<RXCSUM,TXCSUM,VLAN_MTU,RXCSUM_IPV6,TXCSUM_IPV6>
>         ether 58:9c:fc:10:bb:b7
>         groups: epair
>         media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
>         status: active
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> epair0b.60: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP>
> metric 0 mtu 1500
>         options=0
>         ether 58:9c:fc:10:bb:b7
>         inet 192.168.60.1 netmask 0xffffff00 broadcast 192.168.60.255
>         groups: vlan
>         vlan: 60 vlanproto: 802.1q vlanpcp: 0 parent interface: epair0b
>         media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
>         status: active
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>
> Let me know if you want anything more.
>
> ~Paul
> --
> __________________
>
> :(){ :|:& };:

Problem fixed.  I feel so ashamed.
While epair0b.60 was up ... epair0b wasn't.
A stupid stupid oversight.

Thanks again for all the help and attention.  And sorry for the noise.
I owe ya'll a beer if we ever cross paths.

~Paul
-- 
__________________

:(){ :|:& };: