can read nettl files containing raw IP frames (NS_LS_IP, NS_LS_TCP,
NS_LS_UDP, NS_LS_ICMP subsystems), all ethernet/tokenring/fddi driver
level frames (such as BTLAN, BASE100, GELAN, IGELAN subsystems) and LAPB
can read nettl files containing raw IP frames (NS_LS_IP, NS_LS_TCP,
NS_LS_UDP, NS_LS_ICMP subsystems), all ethernet/tokenring/fddi driver
level frames (such as BTLAN, BASE100, GELAN, IGELAN subsystems) and LAPB