In message <506DBE9B.3070209@xxxxxxxx>, 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@xxxxxxx