Unable to get netmap working

[Guest]

[jvaughn]

I want to netmap our x.x.x.160/27 block to 10.10.103.160/27 (we use 10.10.0.0/16 for internal addressing at this particular office). When I configure this, I see that connections get logged as FORWARD:DROP and never make it through the firewall. If I do 'iptables -I FORWARD -j ACCEPT' it works, so I know the problem is somewhere in the rules. Using normal one to one port forwards works fine, but is somewhat of a pain to set up ...

This is on EFW 2.5.1

Here are the current iptables rules: pastebin.com/1YJ6Re51