A.route add–net192.168.1.0 gw 192.168.1.1 netmask 255.255.255.0 metric1
B.route add–net172.16.1.0 gw 192.168.1.1 netmask 255.255.255.255 metric1
C.route add–net172.16.1.0 gw 172.16.1.1 netmask 255.255.255.0 metric1
D.route add default 192.168.1.0 netmask 172.168.1.1 metric1
A.swapon
B.mkdirswap
C.swapspace=on
D.mkswap