Technical Summary
This document describes the historical and background information
behind the removal of the "on-link assumption" from the conceptual
host sending algorithm defined in Neighbor Discovery for IP Version 6
(IPv6). According to the algorithm as originally described, when a
host's default router list is empty, the host assumes that all
destinations are on-link. This is particularly problematic with
IPv6-capable nodes that do not have off-link IPv6 connectivity (e.g.,
no default router). This document describes how making this
assumption causes problems, and describes how these problems outweigh
the benefits of this part of the conceptual sending algorithm.
Working Group Summary
This document is a product of the v6ops working group.
Protocol Quality
David Kessens reviewed this document for the IESG.