Date: Wed, 24 Nov 2004 18:55:14 +0000 From: Dick Davies <rasputnik@hellooperator.net> To: Peter Risdon <peter@circlesquared.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: 4 part domain names Message-ID: <20041124185514.GO12945@lb.tenfour> In-Reply-To: <41A4BC62.3080503@circlesquared.com> References: <5557305861.20041124004849@hexren.net> <20041124000014.GA83249@dogma.freebsd-uk.eu.org> <8763344284.20041124022927@hexren.net> <20041124141737.GA11648@dogma.freebsd-uk.eu.org> <5315017844.20041124160806@hexren.net> <20041124152355.GD11648@dogma.freebsd-uk.eu.org> <10516350570.20041124163019@hexren.net> <41A4AAEF.6080202@circlesquared.com> <20041124163324.GJ12945@lb.tenfour> <41A4BC62.3080503@circlesquared.com>
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* Peter Risdon <peter@circlesquared.com> [1153 16:53]: > >For example, I can create a host in example.com called > > > >us.510.mail > > > >and you can't stop me (evil laughter). > Sent the RFC mail prematurely... > > RFC 952 says: > > <quote> A "name" (Net, Host, Gateway, or Domain name) is a text string > up to 24 characters drawn from the alphabet (A-Z), digits (0-9), minus > sign (-), and period (.). Note that periods are only allowed when they > serve to delimit components of "domain style names". (See RFC-921, > "Domain Name System Implementation Schedule", for background). > </quote> > So I guess you could, but it wouldn't be canonical. If authority ever > gets delegated for mail.example.com, then for 510.mail.example.com, then > a host called us is published, there's going to be a bit of a problem > with your network. Oh my god yes. I've done this for <shudder>customers</shudder>. It works. And is horribly confusing for everyone. I stand by my demented cackle ^_^ -- Rasputin :: Jack of All Trades - Master of Nuns
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