Launchd Config for on-demand SSH tunnel

gistfile1.xml

<?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>org.openssh.port-forwards</string>
        <key>OnDemand</key>
        <true/>
        <key>ProgramArguments</key>
        <array>
            <string>/usr/bin/ssh</string>
            <string>-C</string>
            <string>-o ControlMaster=auto</string>
            <string>-o ControlPath=#### SOMEPATH ####</string>
            <string>-o ControlPersist=16</string>
            <string>-o ServerAliveCountMax=2</string>
            <string>-o ServerAliveInterval=5</string>
            <string>-W localhost:#### ZNC PORT ####</string>
            <string>#### HOSTNAME ####</string>
        </array>
        <key>Sockets</key>
        <dict>
            <key>Listeners</key>
            <dict>
                <key>SockServiceName</key>
                <string>#### LOCAL LISTEN PORT ####</string>
                <key>SockType</key>
                <string>stream</string>
            </dict>
        </dict>
        <key>inetdCompatibility</key>
        <dict>
            <key>Wait</key>
            <false/>
        </dict>
        <!--
        <key>StandardErrorPath</key>
        <string>/tmp/org.openssh.port-forwards.launchd.err</string>
        -->
    </dict>
</plist>