On 2012-03-17 19:22, Dave Thaler wrote: > Brian Carpenter writes: > [...] >> Let me be clear. If a local service has (for some reason) both a ULA and a >> non- >> ULA global address, and the host has both, I think the correct default >> behaviour is for the ULA address pair to be used. > > As I put into the doc, I don't think that's quite right. > > If both the source and dest ULAs are in the same /48 then I think the correct > default is as you say (use ULA). > > If the source and dest ULAs are in different /48's then I think the correct > default is instead to use the non-ULA global, since there's no guarantee of > routability between different /48s. So unless configured otherwise, one > has to assume it's far more problematic than a non-ULA global.
Yes, I agree, that is a case that would need to be handled by locally installed rules if it was required to work (e.g. after a merger of two intranets using different ULA prefixes). I doubt that default rules can cover it. Brian > > You'll find the above logic in the current 3484bis draft. > > -Dave -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------