How to add or delete static routes

1. host

route add x.x.x.x gateway

route delete x.x.x.x gateway

sudo route add 10.8.0.2 192.168.0.1

sudo route delete 10.8.0.2 192.168.0.1

2. subnet

route add x.x.x.x/24 gateway

route delete x.x.x.x/24 gateway

route add 10.8.0.0/24 192.168.0.1

route delete 10.8.0.0/24 192.168.0.1

3. Automatically set static routs

참고: http://www.andre-aulich.de/en/perm/setting-static-routes-in-mac-os-x-104105-client-and-server

We can simply use a launchd entry in /Library/LaunchDaemons, which can look like this. 

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">

<plist version="1.0">

<dict>

<key>Label</key>

<string>setstaticroute</string>

<key>ProgramArguments</key>

<array>

<string>route</string>

<string>add</string>

<string>-host</string>

<string>192.168.2.100</string>

<string>192.168.1.254</string>

</array>

<key>RunAtLoad</key>

<true/>

<key>StartInterval</key>

<integer>1200</integer>

</dict>

</plist>

Just copy the file into /Library/LaunchDaemons/ and activate it by typing

sudo launchctl load -w /Library/LaunchDaemons/setstaticroute.plist