в пакете iftop-0.16-alt2 в мане опечатка/ошибка: сначала: Using the -N option it is possible to get iftop to show packets entering and leaving a given network. For example, iftop -N 10.0.0.0/255.0.0.0 will analyse packets flowing in and out of the 10.* network. потом: -N Do not resolve port number to service names -F net/mask Specifies a network for traffic analysis. If specified, iftop will only include packets flowing in to or out of the given net- work так в начале все же -N или -F ? Steps to Reproduce: 1.man iftop 2. 3.
ack
fixed in 0.17-alt1