Existing solutions for encapsulation?
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
Quoted 15 lines · Steven Brown
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.
Quoted 2 lines
[1] http://www.phelan-4.com/dccp/draft-phelan-dccp-natencap-00.txt
Steven,
I'm not aware of anybody working on this in the kernel at present - this is relatively new though. I would love to, but don't have the time. Basically things get into the kernel by people having a go. A quick hack in userland would work, but I would say give it a go in kernel as well - no time to learn like the present!
The other option is seeing if you can port it from DCCP-TP to the kernel. It is meant to be a portable implementation....
Ian
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Web: http://wand.net.nz/~iam4/ Blog: http://iansblog.jandi.co.nz