Date: Mon, 13 May 2002 10:11:30 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Mike Makonnen <makonnen@pacbell.net> Cc: Peter Haight <peterh@sapros.com>, Bernd Walter <ticso@cicely5.cicely.de>, hackers@FreeBSD.ORG Subject: Re: gethostbyname2 and AF_INET6 Message-ID: <3CDFF3C2.4DF47219@mindspring.com> References: <200205122016.g4CKGlUn048082@wartch.sapros.com> <1021273711.97354.74.camel@kokeb.ambesa.net>
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Mike Makonnen wrote: > On Sun, 2002-05-12 at 14:16, Peter Haight wrote: > > Hmm. Looking at the FreeBSD resolver code, it doesn't look like there is > > some convenient way to do this. Maybe something like, try the AAAA lookup, > > but if we don't get any reply in a short timeout, try an A lookup. If we get > > a reply to that, then log the site as probably not conforming to the RFC. > > In mozilla's case, it's not the FreeBSD resolver that's trying ipv6 and > then ipv4. Mozilla does it explicitly by calling gethostbyname2 first > with AF_INET6, and if that fails with AF_INET. You could just patch it > to not make the first gethostbyname2 call. From a quick browse of the > source from mozilla.org it's src/misc/prnetdb.c around line # 579 or > thereabouts. They are trying to be good network citizens by supporting IPv6. Patching the code so that it no longer supports IPv6, to work around a DNS server that improperly supports DNS... doesn't seem to be the right direction. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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