wget http://mirrors.sohu.com/ubuntu/pool/universe/n/netmask/netmask_2.3.12.tar.gz tar xf netmask_2.3.12.tar.gz cd netmask-2.3.12 ./configure make make install
netmask -r 192.168.0.0/24 netmask -c 192.168.0.0:192.168.0.255
原文：http://www.cnblogs.com/fr5s/p/3656215.html