Anders Magnusson wrote:
> 
...
> Arp can't be handled via the built-in arp functionality (it will reply
> on the wrong interface), so you should get the arp daemon from
> ftp://subzero.campus.luth.se/pub/arpd and configure it to give the correct
> ethernet replys for the machines that are isolated from each other.

I thought
arp -s <real ipnumber that will get translated into 10.0.0.x number> <outside
  interface ether_addr> pub
would do the trick (assuming different interfaces have different ether_addr
cf sun?)

Cheers,

Patrick