Or you can run IPv6 only core-network, perform NAT64 on one side and NAT46 on the customer side. There is an implementation for this on android [1], which is tr

Or you can run IPv6 only core-network, perform NAT64 on one side and NAT46 on the customer side. There is an implementation for this on android [1], which is trivial to run on Linux (I've ported it, there's nothing difficult as it doesn't use anything android specific.) By the way, this technique is called XLAT464. There has been a nice presentation about it at the IETF, and you find the slides online[2]. I believe T-Mobile USA is currently deploying this on production level and it works quite well. I think it's very close to dual-stack, and this technique has the advantage of being extremely easy to deploy. Especially if you already have NAT64 gateways setup in your network, then you have done more that half of the work :-). [1] https://android.googlesource.com/platform/external/android-clat/ https://android.googlesource.com/platform/external/android-c... [2] http://www.ietf.org/proceedings/84/slides/slides-84-sunset4-1 http://www.ietf.org/proceedings/84/slides/slides-84-sunset4-...