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Re: [Idr] draft-walton-bgp-hostname-capability-00

heasley <heas@shrubbery.net> Sun, 17 May 2015 12:03 UTC

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Date: Sun, 17 May 2015 12:03:26 +0000
From: heasley <heas@shrubbery.net>
To: Randy Bush <randy@psg.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Sat, May 16, 2015 at 11:24:45PM -1000, Randy Bush:
> >> and we're all waiting for the attack where the sender puts tasty
> >> things in the supposed dns name
> > If the worry is about the complexity of handling UTF-8, the draft
> > could be change to require ascii 'a' through 'z' (in a
> > case-insensitive manner), the digits '0' through '9', and the hyphen
> > ('-') to be put in the draft as it is what DNS allows.
> 
> bzzzzt!  dns is eight bit clear.  you are thinking of some restrictions
> on hostnames, the leftmost chunk of the lhs at most.

in which, '-' is not valid, iirc.

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