Re: [DNSOP] A conversational description of sentinel.

Tony Finch <dot@dotat.at> Thu, 25 January 2018 15:10 UTC

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Date: Thu, 25 Jan 2018 15:10:24 +0000
From: Tony Finch <dot@dotat.at>
To: Warren Kumari <warren@kumari.net>
cc: dnsop <dnsop@ietf.org>
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Subject: Re: [DNSOP] A conversational description of sentinel.
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(catching up on old messages)

Warren Kumari <warren@kumari.net>; wrote (and I liberally snipped):
>
> I publish this in my a zone:
>
> _is-ta-12345.example.com.   600     IN      A       192.0.2.1
> _is-ta-12345.example.com.   600     IN     RRSIG   A <valid signature>
>
> I now tell users to please browse to www.example.com, where I have a
> webpage which includes the following links:
> http://_is-ta-12345.example.com/

Isn't this going to cause problems with software that checks hostname
syntax?

Wouldn't it be better to use something like a double hyphen to avoid
collisions?

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>;  http://dotat.at/  -  I xn--zr8h punycode
Shannon, Rockall: Northwest backing south later, 5 to 7, occasionally gale 8,
decreasing 4 for a time. Very rough or high, becoming rough or very rough.
Showers, rain later. Mainly good.