On Thu, Mar 11, 2004 at 08:24:23AM +0200, Jari Arkko wrote: [...] > This still leaves open what the behaviour for ICMPv6 Echo Request > should be. I would not bundle this issue with what the other > applications do, but my default answer would be to not respond > to multicast requests unless there is a specific reason to do > so. In this case there seems to be some discussion about multicast > debugging capabilities. I do not have experience of that myself. > Are multicast echo requests the primary multicast debugging > mechanism? If yes, we should allow responses to be sent. If not, > I agree with Suresh that it should be disallowed. Note that > multicast debugging through echo responses is naturally limited > to rather small multicast groups ;-) So I suspect people who > need multicast in a large scale are going to need another > debugging tool in any case.
ICMP echo to link-local multicast addresses is very useful for debugging. In particular the all-nodes group ff02::1. If one were to restrict this, I would make an exception for link-local scope at least. Stig -------------------------------------------------------------------- IETF IPv6 working group mailing list [EMAIL PROTECTED] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
