Subject: Re: [Int-area] draft-ietf-intarea-tunnels

From: Lucy yong <[email-masked]>
Date: Sun, 1 Nov 2015 00:56:34 +0000

Hi Joe,

Your tunnel draft addresses IP tunnel in the Internet, i.e. both M network and N network (in the draft) are on the Internet. 

The draft describes the arch and req. for use portion of the Internet providing a link to other portion of the Internet.

There are also applications that using portion of the Internet provides many links to individual private IP networks, i.e. one link to one private IP network. e.g. network virtualization. 

It would be useful for your draft to explicitly distinct two cases and point out the requirements for both cases. For example, ICMP usage.

Regards,
Lucy