Bert, Please see a revised NEW paragraph below and let us know if this is more clear. Basically we meant to say that when sending an NA in response to an NS, the host does not use the Conceptual Sending Algorithm which means that if the NA response cannot be sent out because the ND-cache doesn't have an entry to the NA destination, then the host issues an address resolution to resolve the destination.
-----Original Message----- From: Manfredi, Albert E [mailto:albert.e.manfr...@boeing.com] Sent: Thursday, May 07, 2009 12:50 PM To: Hemant Singh (shemant) Cc: ipv6@ietf.org Subject: RE: comments on draft-ietf-6man-ipv6-subnet-model-03 IPv6 packets sent using the Conceptual Sending Algorithm as described in [RFC4861] only trigger address resolution for IPv6 addresses that are on-link. Packets to any other address are sent to a default router. If there is no default router, then the node should send an ICMPv6 Destination Unreachable indication as specified in [RFC4861] - more details are provided in the Host Behavior and Rules section. (Note that [RFC4861] changed the behavior when the Default Router List is empty. The behavior in the old version of Neighbor Discovery [RFC2461] was different when there were no default routers.) Note that ND is scoped to a single link. All Neighbor Solicitation responses are assumed to be sent out the same interface on which the corresponding query was received without using the Conceptual Sending Algorithm. Hemant -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
