I'm not sure if it's the only use, but I know that the FBI & other federal services use it to track down computers & their users for whatever they need to be found for. hope i helped. <3
no a bridge does not use a IP address, it uses MAC address', rousters or layer 3 uses ip address.
This address is used for multicast. EIGRP use this IP address.
EIGRP
Routing works using IP addresses in a LAN(Local Area Network) the router assigns a device(s) connected to a port a certain IP Address that it uses to data from other devices or the internet. Your internet IP Address is different from you actual device IP Address. It uses the IP Address as a literal Address for information like mail in your mailbox has a to and from Address.
report that to the fbi/police if you know the ip address to who created or what ever!
A person can be tracked by the Email address. The email address uses an IP to send. This IP can be traced back to the person.
Network Address Translation (NAT)
The IP address is of class C.
DHCP uses the clients MAC address to determine the IP address a client receives.
If your talking about a dial-up modem, it uses a public IP just like a ethernet card. It depends on your ISP, what range of IP addresses you are assigned when you connect (DHCP: automatically assigned IP address; IP address can change) or you could also have a static address( IP address is always the same).
NAT - Network Address Translation.
It depends on how your router was configured. If it uses DHCP service you can't change IP address at all. If you want to be able to change IP address you need to configure it to manual mode and set IP address manually.