Hello 9fans.<div><br></div><div>I&#39;m thinking of writing a NAT implementation for plan 9. I have searched the archives and I&#39;m not quite sure how to get started.</div><div><br></div><div>As I see it there could be three ways of approaching this:</div>


<div><br></div><div>1. User space implementation using ipmux</div><div>2. User space using pkt interfaces in ipifc. </div><div>3. Kernel using something like sources/dho/nfil</div><div><br></div><div>Do you have any advices on how to capture packets and how to send them out again after replacing src/dst addr and port?</div>


<div><br></div><div>Are there any ways of testing NAT in a virtual machine? Right now I&#39;m using vmware and it would be nice to be able to test it without setting up a real machine with two Ethernet interfaces.</div><div>

<br></div><div>-Patrick Kristiansen</div>