Date: Sun, 30 Mar 2003 16:16:35 +0200 From: des@ofug.org (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=) To: "M. Warner Losh" <imp@bsdimp.com> Cc: arch@freebsd.org Subject: Re: Allow underscores in DNS names Message-ID: <xzpel4phrcs.fsf@flood.ping.uio.no> In-Reply-To: <20030330.060534.18864762.imp@bsdimp.com> ("M. Warner Losh"'s message of "Sun, 30 Mar 2003 06:05:34 -0700 (MST)") References: <xzpu1dm2k2h.fsf@flood.ping.uio.no> <20030329.164403.54601077.imp@bsdimp.com> <xzp4r5ljitl.fsf@flood.ping.uio.no> <20030330.060534.18864762.imp@bsdimp.com>
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"M. Warner Losh" <imp@bsdimp.com> writes: > True. However, they are still relevant today. '_' is illegal in DNS > names Says the RFC. IIRC, BIND traditionally did not enforce this, though it does now for A records in master zones unless you change the "check-names" setting (it seems to allow it for TXT records though). > is rejected by the majority of hosts on the internet Wrong. We (*BSD) are pretty much the only ones not to accept underscores in host names. I've tested Windows XP, Solaris 8 and Linux 2.4.18; feel free to try 'ping under_score.ofug.org' on other systems and report your findings here. > and > generally is a bad idea. I don't see why, and I've never heard any other argument against it than "the RFC says so". DES --=20 Dag-Erling Sm=F8rgrav - des@ofug.org
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