Pekka Savola: Length The length of the option, in units of 8 octets. ==> do these lengths include the Type and Length value as well, or just the option "payload"? Should be clear from RFC2461, but might not hurt if a non-ambiguous wording could be found. ------------------ Jari Arkko: I agree. Modified text: "The length of the option (including the type and length fields) in units of 8 octets." Copied from RFC 2461. ------------------ ------------------ ------------------ ------------------