Date: Sat, 29 Mar 2003 17:53:51 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Barry Pederson <bp@barryp.org> Cc: arch@freebsd.org Subject: Re: Allow underscores in DNS names Message-ID: <3E864E2F.BA16F6B5@mindspring.com> References: <xzpu1dm2k2h.fsf@flood.ping.uio.no> <3E8637DE.3080003@barryp.org>
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Barry Pederson wrote: > > 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. Excuse me, but that *particular* underscore is a namespace escape, and is used *precisely* so that it does *NOT* ever match a valid host name. People who want the resource records for specific services are supposed to use a service lookup API, rahter than a host name lookup API. Please read the working group documentation for Zeroconf. Thanks, -- Terry "A big fan of zeroconf and the death of DHCP" Lambert
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