# Re: Final edits - summary of outstanding points.

John Curran (jcurran@nic.near.net)
Tue, 19 Oct 1993 23:01:16 -0400

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    Message-Id: <9310200301.AA13524@mocha.bunyip.com>

    To: Jon Knight <J.P.Knight@lut.ac.uk>

    Subject: Re: Final edits - summary of outstanding points.

    In-Reply-To: Your message of Wed, 20 Oct 1993 00:50:39 -0000.

                 <9310192350.AA05355@sun-co15.lut.ac.uk>

    Date: Tue, 19 Oct 1993 23:01:16 -0400

    From: John Curran <jcurran@nic.near.net>

--------
] From: Jon Knight <J.P.Knight@lut.ac.uk>
] Subject: Re: Final edits - summary of outstanding points.
] Date: Wed, 20 Oct 93 0:50:39 BST
]
] Recently Mitra said:
] >
] > 17) Do we allow trailing "." in FQDNs - I forget who took which side here?
]
] I vote for allowing the trailing ``.'' in FQDNs in URLs. Although many
] people drop the trailing dot in day-to-day usage, the _proper_ format of
] a FQDN does have a trailing dot. This can also make DNS lookups
] slightly faster and safer as the software knows not to attach any local
] domains to it (there was a recent thread in one of the DNS or BIND
] related mailing lists about an obscure security flaw with some BIND
] versions when you present a domain name without a trailing dot).

Hmm, are trailing "."'s allowed in FQDNs?

My reading of RFC1134 is that domain names do not include a trailing ".";
this is only a common convention to prevent the addition of the local domain
during resolution. Relative domain names are not portable between domains,
and as such are dangerous to include in a URL.

/John

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