Re: Rate of growth on IPv6 not fast enough?

* Leo Bicknell:

I know of no platform that does hardware NAT. Rather, NAT is a CPU function. While this is another interesting scaling issue, it means this data is not going in the FIB (hardware forwarding database), but rather is stored in a CPU accessible database.

If you NAT all traffic, the NAT database needs the same level of efficiency as the FIB. You could probably even join the two (you should check that the corresponding RIB entry is still current, but that can probably be forced to be cheap).