The CGA is an IPv6 address generated using a public key and the hash algorithm. Two communication parties can authenticate the CGA of each other to defend against spoofing attacks. The Rivest-Shamir-Adleman Algorithm (RSA) can be used to protect packet integrity.
After the rate limit for processing received ND messages, the key length allowed on the interface, and the timestamp in the ND messages are set, the system considers the received ND messages that do not meet these requirements invalid.