BAP Favored-Peer Details
Type  A one-octet field that indicates the type. For Favored-Peer, this value is 1. 
Length  A one-octet field that indicates the type, length, and Magic-Number. For Favored Peer, this value is 6. 
Magic-Number  A four-octed field that indicates a number that might be unique to one end of the link. A magic number of zero is invalid and must receive a Nak response.