Having problems sending DHCP information over wireless bridge

Wayne Liu wayne_w_liu at yahoo.com
Tue Oct 5 22:24:49 EDT 2004

This seems to me like a WDS issue. By sending DHCP
requests on half of the hosts on the orther side,
WET11 is working as if it's a wireless bridge when 
it's not, because I bet it's not packing up the DHCP 
pkts in 802.11 header with all 4 MAC adddresses used,
which is the WDS case. That's why hostap is discarding
the DHCP requests, due to, like Jonathan said, those
hosts are not associated.
The reason that other traffic works is probably 
because they are routed, not switched, so they use
WET11's association.
Just my two pennies. 


--- Brian Sturgill <zen_hacker at hotmail.com> wrote:

> Are you just routing between interfaces on the linux
> box (hostap box) or are 
> you using bridging of the ethernet and the wireless
> card? If you are not 
> bridging, the dhcp requests are not reaching the
> dhcp server. If you are 
> routing between the interfaces, you will have to
> forward the dhcp requests 
> between the two subnets. The easiest way is to
> bridge the ethernet and the 
> wireless interface on the hostap box. To be a true
> access point, the 
> interfaces need to be bridged.
> Hope this helps,
> Brian
> >From: "Jonathan Shahariw" <jms at shaharov.com>
> >To: <hostap at shmoo.com>
> >Subject: Having problems sending DHCP information
> over wireless bridge
> >Date: Tue, 5 Oct 2004 09:58:53 -0700
> >
> >Hi I have a network where we use a linux box with
> hostap running dhcpd to
> >allocate addresses.  Some of the wireless clients
> for this system are
> >Linksys WET11's that are a wireless to ethernet
> bridge.  The WET11's don't
> >have a problem associating to the wireless network.
>  However, the AP does
> >not send the dhcp replys to the hosts on the
> otherside of the wet11's
> >because they are not associated as they don't have
> wireless cards but talk
> >to the network via the WET11.  All other traffic
> goes through fine if the 
> >IP
> >address is set statically.  It seems that only the
> DHCP traffic is blocked
> >by hostap.
> >
> >Does anyone know how to turn this off.
> >
> >Jonathan
> >_______________________________________________
> >HostAP mailing list
> >HostAP at shmoo.com
> >http://lists.shmoo.com/mailman/listinfo/hostap
> _______________________________________________
> HostAP mailing list
> HostAP at shmoo.com
> http://lists.shmoo.com/mailman/listinfo/hostap

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