Hi Gorry, Interesting draft and at first look it looks like a pretty good solution to the problem of getting a connection from outside a NAT to inside. I found the intro (section 1) more confusing than helpful. First, the terms client and server are not used per the DCCP definition. That becomes apparent near the end of the intro, but it causes confusion early on. Also, I feel that the intro brings up issues that are peripheral to what's being solved, and leads to confusion about what the intent of the draft is. If the intro were more focused on the main problem I think it'd help. That being said, I'm wondering if the draft solves enough of the total problem to be useful. The part I'm thinking of is how a device behind a NAT discovers its public address. That seems to be part of the out-of-band signaling precursor you talk about and I understand your desire to separate that part of the problem. But it seems to me that for this mechanism to be really useful you also need to have that public address discovery. That could be done in a different draft (and maybe there's an ICEish thing that applies), but I think that we'd need both to move forward together. Tom P.
