Reinaldo, > I would be interested to know how traceroute from an IPv4 and IPV6 hosts > behind a CPE would work on 6rd in general and specifically with IPv4/IPv6 > anycast addresses. I would be interested on actual details on source > addresses used for answers, what happens if different answers for the same > TTL traverse different BRs coming back based on the stateless nature, etc. > > If there is an impact on the current way a client and an admin interprets > results, that should be documented. > > Not sure if this was already discussed on the list. Given the widespread use > of traceroute as a diagnostic tool shouldn't at least some of these details > be covered on the draft? > > In ds-lite there is a little discussion on that but given the stateful > nature of NAT that would be a different topic.
I can't think of anything which would affect traceroute. 6rd of course only affects IPv6 traceroute. with multiple BRs it will appear like you have multiple output paths as well as inbound paths. so you may get asymmetric traffic, that's of course not uncommon. the access network will look like a single hop across the 6rd domain. the IPv6 SA that the BR uses will be a normal IPv6 unicast address. we've recommended that the IPv6 subnet router anycast address is supported, but I wouldn't expect that one to be used as an SA. to summarize, I don't think there is any impact here. cheers, Ole _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
