Hi Daniel,
On Mar 30, 2010, at 10:47 AM, Daniel Gavelle wrote:
This mean we can safely determine whether an IPv6 address has been derived from a short address or a full EUI. We use this to determine whether to use short or extended layer 2 addresses when transmitting.
This is a separate issue that we've discussed several times on this list. You are assuming that there is a well-defined mapping between IIDs and link-layer addresses in 6lowpan networks. Currently there is no such assumption.
The IPv6 addressing architecture does not make any assumptions about the relation between IIDs and link-layer addresses. The current 6lowpan-nd and nd-simple drafts maintain this assumption by establishing a mapping between IPv6 and link-layer addresses (taking the place of address resolution in RFC 4861).
If we continue to make no assumption about the relationship of IIDs and link-layer addresses, then you cannot safely assume that an 'ff:fe' IID was derived from a short address.
-- Jonathan Hui _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
