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

[Kim Culhan]

On Wed, Oct 31, 2012 at 4:41 AM, Monthadar Al Jaberi
<monthadar at gmail.com> wrote:
> On Tue, Oct 30, 2012 at 2:29 PM, Kim Culhan <w8hdkim at gmail.com> wrote:
>> On Tue, Oct 30, 2012 at 8:19 AM, Gleb Smirnoff <glebius at freebsd.org> wrote:
>>>   Kim,
>>>
>>> On Mon, Oct 29, 2012 at 05:59:04PM -0400, Kim Culhan wrote:
>>> K> >> What svn revision of FreeBSD -current are you running?
>>> K> >
>>> K> > FreeBSD head r238604.
>>> K>
>>> K> I should have mentioned earlier this is with r242126, there have been
>>> K> some changes
>>> K> to the network code since 238604, maybe that is why you don't have this problem.
>>>
>>> If you can do binary search, that may be valuable.
>>>
>>> --
>>> Totus tuus, Glebius.
>>
>> Ok I can begin that process, Monthadar since you have an earlier
>> version can you try
>> a test:
>>
>> From a machine on one of your 2 interfaces, can you ping a machine on
>> the other interface?
>
> Yes
>
>>
>> Do you see the MAC for a machine on the other interface in the arp table?
>
> Yes
>
>>
>> When this problem is present, it is possible to reach the router and
>> out to the internet
>> (if it is routed that way) but in the case of the wireless interface,
>> for example, you cannot
>> reach a machine on the wired interface.
>>
>> The interfaces here:
>>
>> bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>         ether 02:f3:8d:7d:04:00
>>         inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255
>>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>>         id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
>>         maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
>>         root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
>>         member: msk0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
>>                 ifmaxaddr 0 port 2 priority 128 path cost 55
>>         member: em0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
>>                 ifmaxaddr 0 port 1 priority 128 path cost 2000000
>>         member: wlan1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
>>                 ifmaxaddr 0 port 11 priority 128 path cost 33333
>>
>> msk0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>
>> metric 0 mtu 1500
>>         options=c0019<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWTSO,LINKSTATE>
>>         ether 00:1e:8c:0a:50:e2
>>         inet6 fe80::21e:8cff:fe0a:50e2%msk0 prefixlen 64 scopeid 0x2
>>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>>         media: Ethernet autoselect (1000baseT <full-duplex>)
>>         status: active
>>
>> em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric
>> 0 mtu 1500
>>         options=2098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
>>         ether 00:0e:0c:7f:cf:02
>>         inet6 fe80::20e:cff:fe7f:cf02%em0 prefixlen 64 scopeid 0x1
>>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>>         media: Ethernet autoselect (1000baseT <full-duplex>)
>>         status: active
>>
>> In rc.conf the bridge is created with:
>>
>> ifconfig_bridge0="inet 10.0.0.1 netmask 255.255.255.0 addm wlan1 addm
>> em0 addm msk0 up"
>
> I create the bridge the same way as you.

Thanks for that, so far the working revision has been found in r240826.

Would anyone have a suggestion for a revision to try next ?

thanks
-kim