[multipathtcp] Collection of MPTCP proxy scenarios.

["Weixinpeng (Jackie)" <[e-mail]>]

Hi all,
MPTCP proxy aims to provide additional deployment support for MPTCP protocol, and the functions provided
by MPTCP proxy could involve several different aspects such as supporting establishment of MPTCP connection between
MPTCP host and traditional TCP host, aggregating of subflows to one point for security reasons,...

I am trying to figure out as many MPTCP proxy deployment scenarios as possible to have a more deep understanding
of how MPTCP proxy should work. As an example, here are some potential scenarios:
(1) MPTCP proxy in operator's network. The operator could deploy MPTCP proxy to assist MPTCP-capable UE to communicate
with TCP server on Internet using MPTCP.
(2) MPTCP proxy in enterprise network. Enterprise network could ask all the traffic pass through security check point for security reasons,
in this case, all the subflows belong to a MPTCP connection should be aggregated at the same point.
Besides, some existing documents such as draft-deng-mptcp-proxy-01 and draft-lopez-mptcp-middlebox-00 also provide some related discussion.

So if you know some additional MPTCP proxy deployment scenarios especially the ones that have some special requirements, It will be appreciated if you could
share it here. Or if you have any other considerations on the MPTCP proxy topic, we can also discuss it here.

Thanks!

Regards,
-Xinpeng