Date: Fri, 25 Aug 2006 10:35:03 +0900 From: JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= <jinmei@isl.rdc.toshiba.co.jp> To: Brooks Davis <brooks@one-eyed-alien.net> Cc: freebsd-net@freebsd.org, Pat Lashley <patl@volant.org>, Doug Barton <dougb@freebsd.org>, Fredrik Lindberg <fli+freebsd-net@shapeshifter.se> Subject: Re: Zeroconfig and Multicast DNS Message-ID: <y7v64ghvbqw.wl%jinmei@isl.rdc.toshiba.co.jp> In-Reply-To: <20060824184228.GC37561@lor.one-eyed-alien.net> References: <3E654CC0217F90E20FCD806E@garrett.local> <44EC90B7.6090908@shapeshifter.se> <44ECB0F2.9040300@FreeBSD.org> <44ECBB61.9020808@shapeshifter.se> <5D7785ADC030FEBFB9A5E69D@garrett.local> <44ED8266.1060303@shapeshifter.se> <7C6CDF1CB0BC58A6ADE1FCA8@garrett.local> <44EDCEC2.7060109@shapeshifter.se> <93381966E13B960D4ACFF05C@garrett.local> <44EDF116.9050106@shapeshifter.se> <20060824184228.GC37561@lor.one-eyed-alien.net>
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>>>>> On Thu, 24 Aug 2006 13:42:29 -0500,
>>>>> Brooks Davis <brooks@one-eyed-alien.net> said:
>> Um...I'm not sure if this is even possible. Let's forget mDNS and
>> go back to basic IP.
>> Say a multi-homed host has two interfaces both configured with an
>> address in the rage 169.254/16, say 169.254.1.1 and 169.254.2.1 and
>> it wants to initiate a connection to 169.254.3.1, how on earth should
>> it be able to tell on which side 3.1 is located? There might even be
>> one 3.1 on both side that could be completely different hosts.
> You probably would need an extension similiar to the one for IPv6 LLAs.
> i.e. the %bge0 in fe80::2e0:81ff:fe31:9f00%bge0.
(I've not followed the discussion closely, so my apologize in advance
if this message reacts to an off-topic.)
Note that the '%bge0' notation works well thanks to the sin6_scope_id
field of the sockaddr_in6{} structure. Since sockaddr_in{} doesn't
have such an additional member to solve the ambiguity, the extension
to the IPv4 addresses would not be that trivial.
JINMEI, Tatuya
Communication Platform Lab.
Corporate R&D Center, Toshiba Corp.
jinmei@isl.rdc.toshiba.co.jp
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