I'm running into a need for encapsulation due to various providers
mangling (mandatory NATs on local EVDO service) or dropping (AT&T Yahoo
DSL residential service (but business service works it seems)) DCCP
traffic. I figure DCCP-NAT[1] support in the stack is exactly what I
need, but AFAIK it's not implemented yet (only in DCCP-TP I think).
Is there an existing solution at the moment to add the encoding, or near
term plan to implement it? If not, would it make sense to route the
traffic into a tun device that adds/removes the encoding? Is there a
better way to get the DCCP packet before it's sent than having an extra
service/interface like that? I'm not familiar enough with the kernel
layer to implement it there in reasonable time which is why I'm looking
at doing a quick hack in userland.
[1] http://www.phelan-4.com/dccp/draft-phelan-dccp-natencap-00.txt
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