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Date:      Wed, 29 Nov 2000 12:57:39 +0100 (CET)
From:      Blaz Zupan <blaz@amis.net>
To:        Fernando Schapachnik <fschapachnik@vianetworks.com.ar>
Cc:        freebsd-net@freebsd.org
Subject:   Re: Bridging on wi interfaces
Message-ID:  <Pine.BSF.4.21.0011291252570.91552-100000@titanic.medinet.si>
In-Reply-To: <200011291151.IAA05473@ns1.via-net-works.net.ar>

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> Could you please provide a search key that would make me find it? "wi
> driver" and "wi AND bridging" don't throw anything useful.
> 
> Also, I found on CVS:
> Revision 1.18.2.2 / (download) - annotate - [select for diffs], Wed
> May 24 01:47:51 2000 UTC (6 months ago)
> by archie 
> Branch: RELENG_4 
> Changes since 1.18.2.1: +2 -15 lines
> Diff to previous 1.18.2.1 (colored) to branchpoint 1.18 (colored)
> 
> MFC: Move BPF and bridging code into ether_input()
> 
> Are you sure you are talking about a recent 4.2-R?

I'm talking about *any* version of *any* driver on *any* operating
system.

I searched through the mailing list archives and didn't find it, then I found
out that it was a personal mail from Bill Paul (the author of the WaveLan
driver). Quote:

> Forget it. Just forget it. Put the whole idea out of your mind. The
> WaveLAN firmware will not let you transmit a frame who's origin MAC
> address does not match its own. If you attempt to retransmit a packet
> from another interface with a different origin MAC address, the NIC
> will silently discard it. The origin MAC address plays an important
> part in the 802.11 protocol and you're not allowed to screw with it
> like you can on ethernet. Since bridging depends on being able to
> alter the origin MAC address (at least in the current implementation),
> this means you're out of luck.


Blaz Zupan,  Medinet d.o.o, Linhartova 21, 2000 Maribor, Slovenia
E-mail: blaz@amis.net, Tel: +386-2-320-6320, Fax: +386-2-320-6325




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