Questions about TTL

[James Raftery]

On Thu, Sep 27, 2001 at 03:17:22PM +0000, slidge at slidge.com wrote:
>  will also pick up NS information from the authoritative server for the
>  zone in the SOA record (I believe in the additional field).

The NS records are not *in* the SOA. They may be in a response that
also includes an SOA but they exist, and are cached, seperately.

>  Will the TTL
>  for the authoritative server's NS record take precedence over the TTL for
>  the delegating server's NS record?

Yes.

>  Also, if the TTL on an SOA record expires and the resolver removes it
>  from its cache, will it also remove any NS records it acquired, even
>  though the TTL of the NS records may not have expired yet?

No. There is an SOA record type. There is an NS record type. There is
an MX record type, and so on. They exist, and are cached,
independantly.


Regards,
james
-- 
James Raftery (JBR54)
  "It's somewhere in the Red Hat district"  --  A network engineer's
   freudian slip when talking about Amsterdam's nightlife at RIPE 38.

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