Date: Wed, 23 Dec 2015 11:39:32 -0800 From: Adrian Chadd <adrian.chadd@gmail.com> To: =?UTF-8?Q?Olivier_Cochard=2DLabb=C3=A9?= <olivier@cochard.me> Cc: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>, "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: Re: forwarding didn't work if wlan0 is member of a bridge Message-ID: <CAJ-Vmo=UJqbUFVRszSuyKxsHZuneR7UBgKhuKyZARWMsuWwpeA@mail.gmail.com> In-Reply-To: <CA%2Bq%2BTco3MKBvhCQXvVaDkRZQYzX6tye8opD3yKrtnnF3imGDCg@mail.gmail.com> References: <CA%2Bq%2BTco3MKBvhCQXvVaDkRZQYzX6tye8opD3yKrtnnF3imGDCg@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi,
inet 10.239.142.126 netmask 0xffffffe0 broadcast 10.239.142.127
This looks like a problem with your addressing. That netmask !=3D that broa=
dcast.
Please recheck your networking setup!
-a
On 23 December 2015 at 02:31, Olivier Cochard-Labb=C3=A9 <olivier@cochard.m=
e> wrote:
> Hi,
>
> If wlan0 interface is member of a bridge, FreeBSD didn't reach to
> forward-back packets to wireless client
>
> My setup is this one:
>
> internet gateway <--> [net0] fbsd router [net1 + wifi-hostap in bridge0]
> <--> wireless client
>
> and the problem description:
> - wireless clients didn't receive any packet back: the fbsd-router block=
s
> answers because it thinks wireless clients are "unreachable".
> - But wireless clients can reach all IP of the fbsd-router hitself witho=
ut
> problem, and fbsd-router can ping them too.
> - Ethernet clients connected to the same bridge0 didn't have problem
>
> A tcpdump on the outgoing interface shows the fbsd-router correctly
> receiving/NATing/forwarding the wireless-client packet (10.239.142.104
> natted to 192.168.100.70) toward the Internet-gateway (192.168.100.254),
> but once received the response from the internet-gateway it is not able t=
o
> reach the wireless-client (unreachable):
> [fbsd-router]~> sudo tcpdump -pni net0 icmp
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decod=
e
> listening on net0, link-type EN10MB (Ethernet), capture size 262144 bytes
> 07:35:24.869560 IP 192.168.100.70 > 192.168.100.254: ICMP echo request, i=
d
> 1, seq 375, length 40
> 07:35:24.869772 IP 192.168.100.254 > 192.168.100.70: ICMP echo reply, id =
1,
> seq 375, length 40
> 07:35:24.870314 IP 192.168.100.70 > 192.168.100.254: ICMP host
> 10.239.142.104 unreachable, length 36
>
> But directly from the fbsd-router, there is no problem for reaching the
> wireless-client:
> [fbsd-router]~> ping wireless-client
> PING 10.239.142.104 (10.239.142.104): 56 data bytes
> 64 bytes from 10.239.142.104: icmp_seq=3D0 ttl=3D128 time=3D2.633 ms
> 64 bytes from 10.239.142.104: icmp_seq=3D1 ttl=3D128 time=3D1.614 ms
>
> I'm using a bridge because I need to use only one subnet for all my clien=
ts
> (ethernet and wifi):
> [fbsd-router]~> ifconfig bridge0
> bridge0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mt=
u
> 1500
> ether 02:82:9f:45:81:00
> inet 10.239.142.126 netmask 0xffffffe0 broadcast 10.239.142.127
> nd6 options=3D49<PERFORMNUD,IFDISABLED,NO_RADR>
> groups: bridge
> 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: wlan0 flags=3D143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
> ifmaxaddr 0 port 6 priority 128 path cost 33333
> member: net1 flags=3D143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
> ifmaxaddr 0 port 2 priority 128 path cost 55
>
> And this "unreacheable" problem is related to the bridge, if I remove the
> wlan0 from the bridge, there is no more problem.
>
> What problem can cause FreeBSD to answer back "unreachable" when wlan0 is
> member of a bridge ?
>
> Head versions tested: r290522, r291362, r292613.
>
> Thanks,
> _______________________________________________
> freebsd-current@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-current
> To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org=
"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAJ-Vmo=UJqbUFVRszSuyKxsHZuneR7UBgKhuKyZARWMsuWwpeA>