Re: TTL on DS records

Patrik Wallström <[email protected]> Sat, 21 Feb 2015 11:50:39 +0100
Newsgroups gmane.ietf.dnsext
Message-ID <[email protected]>
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On 21/02/15 02:19, Wessels, Duane wrote:
> Section 5 of RFC 4034 says:
>
>    The DS RR has no special TTL requirements.
>
> While RFC 4035 Section 2.4 says:
>
>    The TTL of a DS RRset SHOULD match the TTL of the delegating NS RRse=
t
>
> Due the "SHOULD" I'm not sure this is worthy of an errata, but seems ra=
ther unfortunate.
>
> Apologies if this is a previously known issue.
Several TLD operators have a lower TTL on the DS. The reason is to help
the registrant to recover from a signature failure and be fast to remove
the DS. I think this is one of the reasons to why there is a SHOULD there=
=2E



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