From owner-freebsd-current  Tue May 19 03:39:14 1998
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To: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
cc: current@FreeBSD.ORG
Subject: Re: struct ifnet handling... 
In-reply-to: Your message of "Mon, 18 May 1998 16:58:54 +0200."
             <199805181458.QAA07273@labinfo.iet.unipi.it> 
Date: Tue, 19 May 1998 19:38:25 +0900
From: Kenjiro Cho <kjc@csl.sony.co.jp>
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>> When this is done, matching interface names requires only a pointer
>> comparison (and furthermore, a NULL pointer can be used as an
>> indication that no interface match is required).

Use if_index instead of a pointer to the interface name.  if_index is
a unique interface number start from 1.  Many routing related programs
use if_index as an interface identifier and if_index is defined in
RFC2133 (Basic Socket Interface Extensions for IPv6).

--Kenjiro

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