Eric, > Can you provide some examples of where this is > "widely-deployed" so we can > judge if it really is ready to move from experimental to > standards track. The widely-deployed implementations I am aware of are in Windows XP and Vista, cisco IOS, *BSD/Kame, and an older version of the Linux/USAGI kernel. There are probably others as well. Fred fred.l.templin@boeing.com > Thanks, > Eric >