This Internet Draft focuses on providing advice to RA-Guard implementations, rather than on the evasion techniques that have been found effective against most popular implementations of RA-Guard.
You can download it from the following link: https://packetstormsecurity.com/files/download/108374/draft-gont-v6ops-ra-guard-implementation-00.txt
Source: https://packetstormsecurity.com/files/108374/Implementation-Advice-For-IPv6-Router-Advertisement-Guard-RA-Guard.html