BUPT THU BUPT BUPT BUPT This document proposes an IPv6-based address label terminal identity authentication architecture, which tightly binds identity information to the source address of data packets. This approach enables hop-by- hop identity authentication while ensuring source address verification. The mechanism facilitates user identity verification, ensuring privacy protection, security, and efficient auditing. Additionally, this document details the implementation of address label authentication within the IPv6 extension header.