From owner-freebsd-hackers  Tue Oct 20 15:15:49 1998
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To: beekey@clark.net
cc: freebsd-hackers@FreeBSD.ORG
Subject: Re: bpf write overwrites link level header? 
In-reply-to: Your message of "Tue, 20 Oct 98 09:16:16 PDT."
             <362CB750.5ECC@clark.net> 
Date: Tue, 20 Oct 1998 15:14:54 PDT
From: Bill Fenner <fenner@parc.xerox.com>
Message-Id: <98Oct20.151503pdt.177539@crevenia.parc.xerox.com>
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bpf copies the destination ethernet header into an AF_UNSPEC sockaddr
that it hands to ether_output().  ether_output() only copies the
destination address and ethertype from that sockaddr into the generated
ethernet header, thus ether_output() fills in the ethernet source.

If you want to change this, you should look at the AF_UNSPEC case
in ether_output() in net/if_ethersubr.c .

  Bill

(Doesn't this belong on freebsd-net?)

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