Source: https://ftp.hanmesoft.com/OS2/kimludvigsen.dk/os2/os2/info/tcpip12.ann
https://archive.org/download/OS2_Archive_CD-ROM_Walnut_Creek_May_1992/OS2_Archive_CD-ROM_Walnut_Creek_May_1992.iso/HOBBES%2FOS2_1_X%2FINFO%2FTCPIP12.ANN