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

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?

Do you see the MAC for a machine on the other interface in the arp table?

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"

thanks
-kim