Date: Sat, 29 Mar 2003 18:18:38 -0600 From: Barry Pederson <bp@barryp.org> To: arch@freebsd.org Subject: Re: Allow underscores in DNS names Message-ID: <3E8637DE.3080003@barryp.org> In-Reply-To: <20030329204104.GF74971@dan.emsphone.com> References: <xzpu1dm2k2h.fsf@flood.ping.uio.no> <20030329204104.GF74971@dan.emsphone.com>
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Dan Nelson wrote: > In the last episode (Mar 29), Dag-Erling Smorgrav said: > >>The attached patch, inspired by a discussion on -STABLE, modifies our >>resolver library to allow underscores in host names, by classifying >>the underscore as a hyphen character. Even though RFC952 forbids >>them, underscores are becoming increasingly common in DNS, and they >>are sometimes used for mechanisms (such as Microsoft's automatic proxy >>configuration scheme) which we might want to support in FreeBSD. > > > I thought proxy autodetect used wpad.domainname.com or looked up > http://domainname.com/wpad.dat ? All the XP machines here do that. The underscore in DNS names is showing up in things like RFC2872 (A DNS RR for specifying the location of services), and "DNS-based Service discovery" as found in Zeroconf/Rendezvous. Barry
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