From owner-freebsd-bugs  Mon Sep  4 13:51:28 2000
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To: Jun-ichiro itojun Hagino <itojun@iijlab.net>
Cc: bugs@freebsd.org, huntting@glarp.com,
	Hajimu UMEMOTO <ume@mahoroba.org>, core@kame.net
Subject: Re: kern/21016: IPV6_JOIN_GROUP doesnt work for mapped IPv4 multicast addresses 
In-Reply-To: Your message of "Tue, 05 Sep 2000 01:02:04 +0900."
             <200009041602.e84G24X23369@itojun.org> 
Date: Mon, 04 Sep 2000 14:51:16 -0600
From: Brad Huntting <huntting@hunkular.glarp.com>
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> this is a feature.  IPv4 mapped address on AF_INET6 socket is just
> to help porting basic IPv4 apps at ease.  to manipulate IPv4 traffic
> in detail (including TOS/TTL, or multicast), you must use AF_INET
> socket.

Section 3.7 of draft-ietf-ipngwg-rfc2553bis-00.txt does not aggre.
V4 mapped addresses are clearly intended to allow "basic" v6 apps
to interoperate with legacy v4 apps w/o duplicating code.  And
"basic" in this case most definitly includes multicast.

Is KAME planning on fixing this anytime soon?


brad


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