Network Help ?

Okay, so my rat server was running on let's say port "xxx"
So port "xxx" was forwarded on my IPV4 address, xxx.xxx.x.7
I've been running the server for three months now with no problems.
All of a sudden today i startup the RAT server and I have no connections, odd?
So i check if my host is fine and everything like that. In the end I ended up finding out that my IPv4 address has changed to xxx.xxx.x.2

Why did it change all of a sudden?
I had to re-forward the port on that address now all my servers are back, but i'm still wondering why it changed in the first place.

That happens from time to time, DHCP can never make up it's mind. Just go into network preferences and manually assign your local ip.

Thanks! . -