Adding beep for packetloss in gateway

[mafiosa]

It would be great if deep sounds could be added in case of packet loss in gateway just like there is beeping in case of logging into the GUI.

[jimp]

The login beep isn't an action that happens on purpose, it's a byproduct of the way the login is logged.

It would be possible to make an option for this but it would likely turn out to be annoying for most. You may as well hand edit a call to beep into rc.newwanip to beep when it's called.