[dns-operations] best way to reprime root-hints?

Peter Koch pk at DENIC.DE
Mon Feb 4 20:34:12 UTC 2008

Hi Bert,

> However, it used to be possible to refresh the root with a single query. I'm
> pondering what is best these days, iterating over all NS records returned to
> get their IP addresses, quering for each of them in turn?

this topic is being worked on in the IETF DNSOP WG, see
<draft-ietf-dnsop-resolver-priming-00.txt> (to be revived soon).
Priming queries could use EDNS0 with a minimum maximum size TBD, maybe 1024.
You'd probably have to implement non-EDNS0 fallback as per RFC 2671 to cope
with walled garden environments.  Looking foreard to your feedback!


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