Add a network route for DESTINATION (a socket address as returned by 'make-socket-address') that goes through GATEWAY (a socket address). For instance, the call:

(add-network-route/gateway sock (make-socket-address AF_INET (inet-pton AF_INET "192.168.0.1") 0))

is equivalent to this 'net-tools' command:

route add -net default gw 192.168.0.1

because the default value of DESTINATION is "0.0.0.0".

Delete the network route for DESTINATION. For instance, the call:

(delete-network-route sock (make-socket-address AF_INET INADDR_ANY 0))

is equivalent to the 'net-tools' command:

route del -net default

Return the <termios> structure for the tty at FD.

Stop using block special device DEVICE for swapping.