Let's try this. It works, but the source IP is from bge0 my external interface (193.77.12.154).
Then use address from em1 in nat rule for bge0. nat on bge0 inet from 192.168.1.0/24 to any -> (em1:0)No one said that translated source address must be the same as the address of nat external (outside) interface.
Pozdrav, Aleksandar