wpa_supplicant with bridge

thomasasta at gmx.net thomasasta at gmx.net
Tue May 16 10:24:59 EDT 2006


http://en.wikipedia.org/wiki/Optimized_link_state_routing_protocol


-------- Original-Nachricht --------
Betreff: wpa_supplicant with bridge
Datum: Tue, 16 May 2006 09:57:19 -0400
Von: "Chris Baechle" <bangular at gmail.com>
An: hostap at shmoo.com

> Scenerio:
> 
> We've got a remote house a few hundred yards away that needs internet
> access. Running cable would be way too much work for so few computers.
> Our idea was to create a bridge. One interface wired and the other
> interface wireless. This way we can have 4 computers going into a
> switch, which goes into the bridging computer (wired), goes out
> wireless to the AP.
> 
> Well, we got it to work with an atheros based (madwifi) card and brctl.
> 
> Now it's time to secure it with WPA-PSK...
> 
> Looking through the lists, it seems the latest stable version of
> wpa_supplicant (0.4.9) doesn't support bridging. However, 0.5.3's
> README indicates an -b argument (for bridging) which seems to be
> exactly what I want.
> 
> Great, right? Well, not exactly. 0.4.9 precompiled fedora version
> works fine with my madwifi (just as a regular client). My 0.5.3
> compile goes into an infinite loop where it connects for a second,
> then disconnects (again, not even bothering with bridging yet. Just as
> a regular client). My AP doesn't support logging so I don't know if it
> was ever a real successful connect. But if I refresh iwconfig fast
> enough it'll show me as being associated for a second, then not. I
> tried debian unstable with the wpasupplicant experimental package with
> the same exact results (as well as my own 0.5.3 compile). Looking
> through the list, it seems at one point someone had the exact same
> issue. It was suggested maybe it's a bug at the madwifi level, but
> that's where the discussion ended.
> 
> So now it's question time.
>  - Am I correct in assuming 0.4.9 doesn't support what I'm trying to
> do (bridging)?
> - Does the -b option in 0.5.3 actually accomplish what I'm trying to do?
> - Are there any known issues with madwifi and wpa_supplicant?
> - Has anyone ever accomplished what I'm trying to do with
> wpa_supplicant and _any_ wireless card?
> - Can any other linux/*bsd supplicant achieve bridging in this manner?
> 
> I suppose if I absolutly have to I can NAT. I'd rather not as the
> outbound connection is already double natted and we are trying to get
> it down to single NAT. My other option would be Proxy ARP. But really,
> I'd rather do it this way because it will be best for our setup.
> 
> If need be I can sponsor (monitarily) any bug fixing to get this to
> work because we have a few more places we'd be able to use this and
> would be extremely useful to us.
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