Value,Description,Reference
Bit 0,"Mandatory Bit, ""M-bit""",[RFC2661][RFC3931]
Bit 1,"Hidden Bit, ""H-bit""",[RFC2661][RFC3931]
Bit 2,Reserved,[RFC2661][RFC3931]
Bit 3,Reserved,[RFC2661][RFC3931]
Bit 4,Reserved,[RFC2661][RFC3931]
Bit 5,Reserved,[RFC2661][RFC3931]