Ole, Roland, Could we limit the 6man discussion to the question asked by Softwire, i.e. whether new IID types can be defined, using u=g=1, with a first one for 4rd, is compatible with the current IPv6 specification?
If the answer is positive (as it seems it can be), restarting a discussion on the 4rd design is unnecessary. That is only if the answer is negative that Softwire will have to restart working on the subject. Regards, RD 2012-12-19 13:37, Ole Troan <otr...@employees.org> : > [...] > >> I briefly read into the 4rd draft, but it's not entirely clear to me >> whether other solutions don't exist. Maybe there are other means to >> get the context knowledge that this particular IPv6 address has a >> special structure encoded somehow. > > as a clarification of what has happened in softwire. (Suresh, please correct > me if I'm wrong.) > > the softwire working group has chosen to standardize "MAP-E > (http://tools.ietf.org/html/draft-ietf-softwire-map-02)" as the solution for > stateless A+P. the two competing proposals MAP-T (dIVI) and 4rd are being > published on experimental track. > > all of these 3 solutions use interface-ids. MAP-E a single address of a > certain format. while MAP-T and 4rd uses the interface-id field to carry > destination IPv4 address, and in 4rd's case a checksum neutraliser field. > > the interface-ids that 4rd uses must be unique on the link, and it doesn't > handle conflicts with other (native) nodes well. > alternative approaches to reserving interface-id space for this mechanism > could be: > > - reserve a /64 of the customers delegated prefix for the sole use of 4rd > - the 4rd node protects all possible 4rd interface-ids using DAD > > Best regards, > Ole > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
