Interfaces connected by bridge(4) do not pass arp replies

[Kim Culhan]

On Mon, Oct 29, 2012 at 5:17 PM, Monthadar Al Jaberi
<monthadar at gmail.com> wrote:
> On Mon, Oct 29, 2012 at 9:55 PM, Kim Culhan <w8hdkim at gmail.com> wrote:
>> On Mon, Oct 29, 2012 at 3:59 PM, Monthadar Al Jaberi
>> <monthadar at gmail.com> wrote:
>>> On Mon, Oct 29, 2012 at 8:46 PM, Kim Culhan <w8hdkim at gmail.com> wrote:
>>>> With 2 interfaces present on a bridge0, an arp request is send from
>>>> msk0 and is received
>>>> by a machine on em0.
>>>>
>>>> When a reply to that arp request is sent by a machine on em0 it is not
>>>> visible on the
>>>> bridge0 nor on msk0 as indicated by tcpdump.
>>>>
>>>> The arp reply is visible while watching em0 with tcpdump.
>>>
>>> Is em0 set in promisc mode?
>>>
>>>>
>>>> This behaviour is also true when arp requests are sent from a wlan
>>>> interface ath0
>>>> and received on a wired interface, the arp reply is visible on the
>>>> wired interface but not
>>>> visible monitoring with 'tcpdump -i bridge0 arp'.
>>>
>>> Hmm, I am briding between ath0 and wired (arge0).
>>>
>>> Can you provide more info? what is your rc.conf? How does it set the interfaces?
>>> Can you give ifconfig output?
>>> The are reply that you dont see on bridge0 can you dump it from wired
>>> interface?
>>
>> What svn revision of FreeBSD -current are you running?
>
> FreeBSD head r238604.

I should have mentioned earlier this is with r242126, there have been
some changes
to the network code since 238604, maybe that is why you don't have this problem.

-kim