In message <506DBE9B(_dot_)3070209(_at_)ogud(_dot_)com>, Olafur Gudmundsson
writes:
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.
This works regardless of the position of the label. If a TLD label
is a binary label then you strip back the labels until you reach
the root.
Resolvers involved in the lookup need to be updated and I didn't
dispute that.
Olafur
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka(_at_)isc(_dot_)org