[dns-operations] .ORG is signed

Alexander Gall gall at switch.ch
Fri Jun 5 12:52:15 UTC 2009

On Fri, 05 Jun 2009 13:53:07 +0200, Florian Weimer <fweimer at bfk.de> said:

> * Chris Thompson:
>> This happens whether the DO bit is set in the request or not. Was it
>> happening before the zone was signed?

> There was a time when negative responses weren't consistent across all
> the servers, but some of the servers returned a zero TTL, too.  So the
> answer is "yes".

Indeed.  Also note that the TTL on the SOA RR itself is 0 as well.  I
once asked them why they do this and their answer was a reference to
RFC 1035, Section 3.2.1 (in the description of TTL):

  "For example, SOA records are always distributed with a zero TTL to
   prohibit caching."

I then pointed them to RFC2181 section 7.2. but never got a reply to
that.  If they only implement 1035, they might not have heared of
negative caching either ;)


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