2.2.2.2.86 Ipv6Prefix

The Ipv6Prefix key specifies a 64-bit prefix length of the IPv6 address of the demand-dial connection. This key is optional.<231> This key SHOULD be initialized to 0000000000000000 and MUST be ignored on receipt. When RRAS connects to a remote RRAS endpoint, the prefix length for the IPv6 address of the demand-dial connection is cached as a value for this key.