TS updates in MOBIKE

"Narayanan, Vidya" <[email protected]> Thu, 1 Nov 2007 18:46:26 -0700

Newsgroups	gmane.ietf.mobike,gmane.ietf.ipsec
Message-ID	<[email protected]>

Hi,
RFC4555 only allows updates to tunnel endpoint addresses and not
selectors, etc.  Does anyone know why TS updates are not permitted?  If
MOBIKE allowed what an SA rekey would allow, what is the problem?  

Thanks,
Vidya