Which one should I use, #1 with tun0, or 2 with dc0?
1. nat on tun0 from 192.168.1.0/24 to any -> tun0
This one. Make sure you're using tun0 in your filtering rules as well because dc0 will only see the encapsulated packets.
.joel
Which one should I use, #1 with tun0, or 2 with dc0?
1. nat on tun0 from 192.168.1.0/24 to any -> tun0