Through analyzing mapping spoofing which may exist or happen in the incoming mapping theory under loca-tor/ID separation protocol

a new mapping approach to relieve the thread of mapping spoofing was proposed.This ap-proach introduced the reputation model based on feedback evaluation into the mapping theory and increased the trust-worthiness of the mapping information by means of the dynamic trust evaluation.Meanwhile

the self-certifying identifi-ers represented the identity information of tunnel routers

and guaranteed the authenticity of the mapping sources.Per-formance analysis and simulation results have shown that the approach provides a satisfying safeguard for the mapping theory.By setting the threshold of different trust value

this approach can effectively inhibit the tunnel routers from em-ploying the mendacious mapping information

and further reduces the hazards of mapping spoofing.