how to ip address change

Some providers want to discourage their clients from running a server (mail, ftp, game or other) on their computer and therefore change the public IP address the user gets regularly. Other providers have fewer addresses than they have subscribers and therefore assign a random address to each user when he connects to the internet and assign that same address to another user after he disconnects. Both these processes are usually done by the Dynamic Host Configuration Protocol server (DHCP server).