No steps. Possibility.
"Note that CMx2 lists ALL the IP addresses assigned to a system. If you have multiple modems or network cards, it will list all IP addresses associated with those devices. What it can’t do is tell you which one is the correct IP address, because that depends on how your system is configured. If you do not know the correct IP address yourself, your opponent will have to try all of them to find the correct one. Make a note of its place in the list, because even"
"If either player is behind a firewall (hacker protection) or is using a proxy system, you may need to reconfigure your system by manually opening the necessary port for incoming and outgoing transmissions. You might have to uninstall some firewalls completely (software-based) or disable them (hardware-based). Some firewalls might have to be uninstalled completely. Users with routers need to add the TCP port to the routers forwarding table and match it to the internal IP address of the computer that hosts the game, then use the router’s control panel to get the external IP address given out by your ISP. This external IP address is what your opponent will need in order to connect to you as host."
"Note: Combat Mission uses the UDP and TCP port 7023 for all multiplayer games. If you are trying to HOST a TCP-IP game make sure and open port 7023 for both UDP and TCP traffic"
if the IP address itself might change, the order in which the IPs are listed should not.