Hello, I have an issue which I would like assistance in, and by a quick glance in the rules I didn't feel like I'm breaking anything, so:

In short I'm hosting a service-like thing for a few guys I know on our LAN, and I use a static IP for ease-of-access (using domain names is not an option for us), and in some days like today, the IP that I use gets acquired by someone else via the typical DHCP process.

I would like to know about the possible options for reacquiring the IP address from the person who is occupying it.