Fred Baker <f...@cisco.com> writes: > There are a number of RFCs with specific values. You might look at RFC > 2473 (64),
Specifically, the text at issue says: > Hop Limit: > > The tunnel IPv6 header hop limit is set to a pre-configured > value - see section 6.3. > > The default value for hosts is the Neighbor Discovery > advertised hop limit [ND-Spec]. The default value for > routers is the default IPv6 Hop Limit value from the > Assigned Numbers RFC (64 at the time of writing this > document). The intention of that wording was that the value to be used was the same one as recommended for general use for IPv4, which IANA records. http://www.iana.org/assignments/ip-parameters says: > IP TIME TO LIVE PARAMETER > > The current recommended default time to live (TTL) for the Internet > Protocol (IP) is 64 [RFC791, RFC1122]. Obviously, this could be a bit clearer. IANA should have a similar entry for Hop Limit, which might well just point to the IPv4 TTL value. Thomas -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
