launchd plist for keeping a tunnel alive

autossh.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<!-- https://www.launchd.info/ -->
<plist version="1.0">
    <dict>
        <key>Label</key>
        <string>tunnel.autossh</string>
        
        <key>KeepAlive</key>
        <dict>
            <key>NetworkState</key>
            <true/>
        </dict>
        
        <key>RunAtLoad</key>
        <true/>
        
        <key>ProgramArguments</key>
        <array>
            <string>/usr/local/bin/autossh</string>
            <string>-M0</string>
            <string>-N</string>
            <string>-L</string>
            <string>4242:localhost:4242</string>
            <string>steve@example.com</string>
        </array>
        
        <key>StandardOutPath</key>
        <string>/Users/steve/Logs/autossh/autossh.stdout</string>
        
        <key>StandardErrorPath</key>
        <string>/Users/steve/Logs/autossh/autossh.stderr</string>
        
        <key>User</key>
        <string>steve</string>
        
        <key>ThrottleInterval</key>
        <integer>30</integer>
    </dict>
</plist>