You have 3 primary IP addresses you need to worry about:
127.0.0.1
This is localhost. This is the computer you are currently using.
192.168.x.x
This is your internal IP. Every computer on the same network has a unique internal IP address. This allows your router that connects to your ISP to see which computer needs what data.
XX.XX.XX.XX
This is your external IP (ipv4 usually), which is what computers outside your network use to connect to your computer.
Since you are bringing other computers to the computer hosting, I assume you are all under the same network. This means you need two realms: One for localhost, and one for internal IP's.
In your realms config there is a option for how many realms to have. At the bottom there is a config for each realm.
Your realm config should subsequently look similar to this but not exactly the same:
Code:
/*****************************************************
* ArcEmu Realms Configuration File
* Last edited: 11/14/2010
*
* Configure ArcEmu's Realms below
******************************************************
<LogonServer Address = "127.0.0.1"
Port = "8093"
Name = "Default Logon"
RealmCount = "2">
<Realm1 Name = "Localhost"
Address = "127.0.0.1:8129"
Icon = "PVP"
Population = "1.0"
TimeZone = "8">
<Realm1 Name = "InternalIP"
Address = "192.168.0.1:8129"
Icon = "PVP"
Population = "1.0"
TimeZone = "8">
One realm is 127.0.0.1 (your computer) and the other is your internal IP (192.168.0.1 in this example).
You can find out your internal IP by going into command prompt and typing "ipconfig". It will be in there.