Device of dynamically assigning variable length prefixes for IP network equipments

Example embodiments disclose a prefix assignment device for use in network equipments of an Internet Protocol communication network, the device including a processing module. The processing module of the prefix assignment device may determine a node Nj associated with an unassigned prefix Pj of length L(Pj) equal to L(Rk)-m. The processing module may also assign prefix Pj to the network equipment Rk if m is equal to 0 and/or perform successive m loops if m is greater than 0. The module may select one of the two prefixes with lengths equal to L(Rk) for assignment to the network equipment Rk.