The answer is : 0.0.0.0 In DHCP, 0.0.0.0 is reserved for use by clients that are not yet configured with an IP address. The IP address 0.0.0.0 indicates different uses at different places. Usually, it’s a non-routable meta address that’s not bound to any particular remote address. Dealing with servers, it means all IPv4 addresses in the local machine.