Subject: [Mip4] Tunnel Type Change for Mobile IPv4

From: Alexandru Petrescu <[email-masked]>
Date: Mon, 07 Mar 2011 21:53:33 +0100

Dear MIP4,

I have just submitted a new draft titled

        "Tunnel Type Change for Mobile IPv4 (TTC)"

http://tools.ietf.org/html/draft-petrescu-mip4-tuntype-change-00

It describes a situation where some HA implementation has difficulty
with the change of tunnel of a Mobile Router: from IP-in-IP to IP-in-UDP
(MR changes its CoA between NAT and no-NAT).

Proposed solutions include: better HA implementation, better
specifications of Mobile IPv4 RFC5944, better NAT Traversal RFC, or
maybe a new extension TTC to the Registration Request, or a better Reply
Code (more detailed than just 64 "declined, reason unspecified").

As it stands now we are interested in comments on the problem, see
similar issues were experience elsewhere.

Comments appreciated,

Alex