Re: [dnsext] Last Call: <draft-ietf-dnsext-rfc2671bis-edns0-09.txt> (Extension Mechanisms for DNS (EDNS(0))) to Internet Standard

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On 02/10/2012 21:15, Mark Andrews wrote:
Labels only work when all the severs for a zone that has a new label type,
in ADDITION sufficient fraction servers in all zones above that zone
MUST understand the new
label type.

Not true. Binary labels could have been made to work by removing
the left hand label until the remaining suffix consisted of only
RFC 1035 labels, looking up the servers for that domain, then
resuming query processing using those servers similar to what we
do with DS lookups.

Such processing would be required for any new label type used in a
QNAME and would be a significant change to the standard query logic.

Mark


Mark,

This will only work if all the recursive resolvers that "consumers" for
this new label types have been updated AND the new label type is the left most label(s) in the name.


Olafur



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