1.7 Versioning and Capability Negotiation

A client specifies the highest DFS referral version supported in the MaxReferralLevel field of the REQ_GET_DFS_REFERRAL (section 2.2.2) message.

A server responds with the highest DFS referral version supported by both the client and the server in the VersionNumber field of each referral entry, as specified in section 2.2.5.