Patent ID: 9191361
Filing Date: 2015-11-17
Classification: H04L

Abstract:
1. A computer software product, comprising a non-transitory medium readable by a processor, the non-transitory medium having stored thereon a set of instructions for a new node to perform an authentication method for stateless address allocation during a stateless address auto-configuration (SLAAC) sequence in IPv6 networks, the set of instructions including: (a) a first sequence of instructions which, when executed by the processor, causes said processor to form a new node link-local address (LLA); (b) a second sequence of instructions which, when executed by the processor, causes said processor to extract the last 24 bits of the new node LLA, dividing it into a Most Significant Segment (MSS) and a Least Significant Segment (LSS); (c) a third sequence of instructions which, when executed by the processor, causes said processor to construct a neighbor solicitation (NS) message and multicast the NS to all nodes on a link of the IPv6 network, the LSS being encapsulated inside a payload of the NS; (d) a fourth sequence of instructions which, when executed by the processor, causes said processor to receive neighbor advertisement (NA) messages from all existing nodes having a LSS matching the LSS of the new node, the NA message including the LLA of the existing node responding with the NA message, an existing neighbor's LLA residing in a payload portion of the NA message; (e) a fifth sequence of instructions which, when executed by the processor, causes said processor to search from a list of the responding existing nodes for a match between the existing neighbor's LLA and the LLA of the new node; (f) a sixth sequence of instructions which, when executed by the processor, causes said processor to join the network using the new node LLA when there is no match between the new node LLA and the LLA of the existing neighbor node; and (g) a seventh sequence of instructions which, when executed by the processor, causes said processor to select a new LSS from a pool of 2