INT 61 - PC/TCP kernel v2.05 - NOP for SLIP kernel AH = function 31h "net_add_route" 32h "net_del_route" 33h "net_dump_routes" Notes: these functions are described as "unused" in the v2.2 documentation router configuration can be altered using INT 61/AH=01h this function is not supported by Beame&Whiteside's BWPCTCP v3.0a shim