Date: Fri, 02 May 2003 21:05:51 +1000 From: Mark.Andrews@isc.org To: Melvyn Sopacua <freebsd-stable@webteckies.org> Cc: Dan Pelleg <daniel+bsd@pelleg.org> Subject: Re: IPv6 Resolver (or: Slow rendering of Webpages using Konqueror) Message-ID: <200305021105.h42B5p1G012593@drugs.dv.isc.org> In-Reply-To: Your message of "Fri, 02 May 2003 10:47:58 %2B0200." <200305021047.58488.freebsd-stable@webteckies.org>
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> On Friday 02 May 2003 04:30, Mark.Andrews@isc.org wrote: > > > > 2) There is no global way to make IPv6 go away in kernel, world, and > > > ports > > > > > > This seems to be a FreeBSD bug. The intent with the ability to remove > > > IPv6 from the kernel config and set ipv6_enable to no would seem to > > > indicate that somebody wants to be able to shut off IPv6. The fact that > > > the resolver still executes an IPv6 request would appear to be breakage. > > > > This is under application control. The newer API's also > > have flags to say look at what address families are configured > > and only return addresses in this family. Note you may still > > want to make queries for the other family so you stop searching > > when either address is found. > > So why not patch the libc (libisc/libresolv) functions, that they return a > valid NOERROR/NOTIMP response for any AF_INET6 lookups without actually > making these requests? For instance when -DDISABLE_IPV6 is set? > > This could easily be enforced via a switch in /etc/make.conf during make > buildworld/buildkernel, which would then result in a 100% ipv4 node. Bad Idea. Applications lookup IPv6 addresses for reasons other than making connection. > Additionally this changes the mindset from 'enabling ipv6' to 'disabling it', > > rather than giving the illusion, that only enabling ipv6 will do anything > ipv6 related. > > Applications that absolutely want to resolv Ipv6 for whatever reason, can > always implement their own resolver. What are you smoking. This is one of the most ridiculous ideas I've heard in a long while. > -- > Best regards, > > Melvyn Sopacua -- Mark Andrews, Internet Software Consortium 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews@isc.org
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