38. EXTENSION HEADERS HOP-BY-HOP OPTIONS - Jumbograms The hop-by-hop extension header for large datagrams (Jumbograms) 1ST BYTE: WHAT KIND OF HEADER COME NEXT 2ND BYTE: LENGTH OF HEADER IN BYTES EXCLUDING THE FIRST 8 MANDATORY BYTES 3RD BYTE: TELLS THAT THIS OPTIONS DEFINES THE DATAGRAM SIZE (code194) 4TH BYTE: SIZE IS A 4-BYTE NUMBER LAST 4 BYTES: SIZE OF THE DATAGRAM