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To: Hajimu UMEMOTO (=?ISO-2022-JP?B?GyRCR19LXBsoQiAbJEJIJRsoQg==?=) <ume@mahoroba.org>
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In-reply-to: ume's message of Wed, 31 May 2000 03:30:25 JST.
      <200005301830.e4UIUOS49066@peace.mahoroba.org>
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Subject: Re: ftp(1) breakage w/ passive mode? 
From: itojun@iijlab.net
Date: Wed, 31 May 2000 10:14:33 +0900
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>Yes.  the patch convert all IPv4 mapped IPv6 address returned into
>IPv4 address.  If someone announce mapped address using AAAA RR, it
>also converted.  So, caller have no chance to know whether returned
>address is mapped address or native IPv4 address.  However, I think
>this is rare case in at least now.
>After correcting getaddrinfo()'s search order, in some case, A RR is
>accidentaly converted into mapped address without expectation of
>caller.  This may confuse IPv4 people and force inconvenience.  I
>worry about this.
>Fixing ftp(1) and other caller is also important.  But, it is another
>issue.

	isn't there some issue in getipnodebyname(), instead of getaddrinfo()?
	(NOTE: I'm not really up-to-date with the current status of freebsd4
	lib/libc/net)
	if you can tell me repeatable example of getaddrinfo() failure, 
	that would be helpful...

itojun


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