The document currently says: Routers MUST support the assignment of /127 prefixes on point-to- point inter-router links.
I fully support this. However, I believe that as far as routing is concerned, IPv6 continues to be based on CIDR. There is nothing special about the 64 boundary from a routing perspective. This, I believe the above should be changed to the following: Routers MUST support the assignment of arbitrary length prefixes (including but not limited to /127s) on point-to-point inter-router links. I do not see any reason to restrict implementations to only supporting /127s prefixes. Thoughts? In particular, I'd like to hear from operators as to whether they want the functionality of being able to assign subnets of arbitrary length, or whether it would be sufficient to only support /127s. Note: I am quite aware that stateless addr autoconfiguration uses 64-bit Interface Identifiers (IIDs) and that the addressing architecture says that addresses need to be formed using IIDs. However these requirements relate to the formation of addresses. I am aware of no architectural requirement (or justification) that says routing should only be done on the first 64 bits of an address, regardless of how an address was formed. Note: This does not mean I am in favor of or am suggesting any changes to stateless addr config, or the IPv6 addressing architecture. I believe the above can be made without changing those documents. Thomas -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
