IP unnumbered is to borrow an IP address from an interface. If an interface has multiple IP addresses, all its IP addresses will be borrowed and the primary address will continue after these IP addresses are borrowed.

Question

Quizplus · Accepted Answer

IP unnumbered allows an interface to borrow an IP address from another interface, but it does not borrow all IP addresses. It typically uses the primary IP address of the specified interface.

IP Unnumbered Is to Borrow an IP Address from an Interface