> Hello 9fans. > I'm thinking of writing a NAT implementation for plan 9. I have searched the > archives and I'm not quite sure how to get started. > > As I see it there could be three ways of approaching this: > > 1. User space implementation using ipmux > 2. User space using pkt interfaces in ipifc. > 3. Kernel using something like sources/dho/nfil
one could simply extend ipmux. however, the primary drawback to that approach is that it would break most existing setups that use a public ip stack and a second private ip stack. one approach would be to provide a fakey-fakey ethernat ethernet device which could decide where the frames go. then the ip stacks could use the ethernat interfaces instead of the real ones. - erik
