Erik Nordmark wrote: > Thomas Narten wrote: > >>> CurHopLimit The default hop limit to be used when sending >>> (unicast) IP packets. >> >> why only unicast? seems like this should also apply to multicast. Are >> the default values for multicast different than unicast? (I think the >> answer is yes for IPv4, but I'm not sure that applies to IPv6. IPv6 >> multicast addresses have explicit scoping, whereas IPv4 multicast used >> the TTL for that...) > > I don't know how much we've discussed it, but I think IPv6 needs to have > a default hoplimit for multicast of 1, just like IPv4. Applications can > use IPV6_MULTICAST_HOPLIMIT etc to set a different value.
Will people have an issue with a default Hop Limit of 1, when some protocols (e.g. ND) use HL=255? A default of 1 does not make sense to me for multicast scopes above link-local. Regards, Brian -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
