Based on a recent thread (http://www.ops.ietf.org/lists/v6ops/v6ops.2008/msg00896.html) the following paragraph from the draft appears to warrant some more thought if not outright a revision
" In addition to the Prefix List, individual addresses are on-link if they are the target of a Redirect Message indicating on-link, or the source of a valid Neighbor Solicitation or Neighbor Advertisement message. Note that Redirect Messages can also indicate an address is off-link. Individual address entries can be expired by the Neighbor Unreachability Detection mechanism." Using unconditionally the source address of a neighbour solicitation or NA to determine on-link would indeed appear to be undesirable, unless the intent is allow some direct host-host cross subnet/prefix communication without a router involved at any stage (this is not a good idea IMO). A constraint could be introduced such as: A host only learns on-link addresses from the source of NS and NA messages iff it already has an on-link prefix that would cover that address. Learning from Redirect messages would continue to be allowed. My 2c. -Woj. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Brian Haberman > Sent: 26 June 2008 14:17 > To: [email protected] > Cc: Bob Hinden > Subject: 6MAN WG Last Call:draft-ietf-6man-ipv6-subnet-model-00.txt > > All, > This message starts a 3-week 6MAN Working Group Last Call on > advancing: > > Title : IPv6 Subnet Model: the Relationship between > Links and Subnet Prefixes > Author(s) : H. Singh, et al. > Filename : draft-ietf-6man-ipv6-subnet-model-00.txt > Pages : 8 > Date : 2008-05-08 > > as a Proposed Standard. Substantive comments and statements > of support for advancing this document should be directed to > the mailing list. > Editorial suggestions can be sent to the document editor. > This last call will end on July 10, 2008. > > Regards, > Brian & Bob > 6MAN co-chairs > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > [email protected] > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
