On 2012-01-07 06:07, Templin, Fred L wrote: > > >> -----Original Message----- >> From: Havard Eidnes [mailto:[email protected]] >> Sent: Friday, January 06, 2012 12:28 AM >> To: Templin, Fred L >> Cc: [email protected]; [email protected]; [email protected] >> Subject: Re: Fragmentation-related security issues >> >>>> The problem with RFC4821 (assumming the ICMP-free variant) is >>>> that it has a longer convergnece time that ICMP-enabled PMTU. >>> RFC4821 works even if there are no ICMPs, but will >>> converge more quickly if there are ICMPs. That is why >>> RFC4821 should be a SHOULD for hosts, and generation >>> of ICMPs should be a MUST for routers. >> Does not this also imply that ICMP-generating routers MUST use a >> globally unique IPv6 address as the source of the ICMP? > > AFAICT, the normative reference is RFC4443, as cited > in RFC6434.
As I think we noticed recently in some other thread, there is therefore an operational requirement that all routers must possess at least one GUA. As far as I know, some routers can work just fine for all other purposes with only link-local addresses. Brian -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
