Hi Geoff, Brian reminded me of your Last Call comment, which I saw and then overlooked. I think I meant to say "No experimental addresses are assigned", where you took exception to saying "...defined". Do you find the following text sensible? 3.4.1. IPv6 Unicast Addresses [RFC2928] defines a set of IPv6 addresses for testing and experimental usage: The block of Sub-TLA IDs assigned to the IANA (i.e., 2001: 0000::/29 - 2001:01F8::/29) is for assignment for testing and experimental usage to support activities such as the 6bone, and for new approaches like exchanges. However, at this writing, there are no RFC3692-style experimental IPv6 addresses assigned. [I-D.huston-ipv6-iana-specials] creates an IANA registry which may in the future contain such assignments. For certain experiments, Unique Local Addresses [RFC4193] may be useful. It is not appropriate to use addresses in the documentation prefix [RFC3849] for experimentation. I don't feel comfortable asking for a unicast address range since I don't think the 3692 rules are clear enough for unicast addresses (like, who gets to advertise them?) so I'd rather just refer to the two relevant documents. Thanks, Bill _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf