Isn't this a case where what we really want is MUST implement and SHOULD enable?
If I bought a router, I would expect it to be capable of redirecting but I might want to disable it. Regards Brian On 2010-08-13 07:47, Alain Durand wrote: > I have a question about draft-ietf-6man-node-req-bis-05.txt. > Section 5.2: > > Redirect functionality SHOULD be supported. If the node is a router, > Redirect functionality MUST be supported. > > However, draft-ietf-6man-node-req-bis-05.txt refer to the normative text on > Neighbor Discovery, ie RFC4861 that says: > Section 8.2: > > > A router SHOULD send a redirect message, subject to rate limiting, > whenever it forwards a packet that is not explicitly addressed to > itself (i.e., a packet that is not source routed through the router) > in which: > > - the Source Address field of the packet identifies a neighbor, > and > > - the router determines (by means outside the scope of this > specification) that a better first-hop node resides on the same > link as the sending node for the Destination Address of the > packet being forwarded, and > > - the Destination Address of the packet is not a multicast > address. > > > It seems that the Node requirement text is going above and beyond what is > required by RFC4861, transforming the SHOULD into a MUST. > I might have missed (or do not remember) the discussion, is there a reason > for this change? And shouldn't the ND spec have been changed first > to allow to upgrade the SHOULD into A MUST? > > For the record, I support the SHOULD in RFC4861 and I would rather like to > see the node requirements document say the same thing. > > - Alain. > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > [email protected] > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
