Ping causing homebridge to crash
Hey Luke,
i have updated to version 3.3.3. I get this error every few hours with a reboot of the homebridge.

![72f04613-4adb-47b6-8460-3fa2f2274f97](https://user-images.githubusercontent.com/27686185/37786069-ff2cc6cc-2dfb-11e8-87db-96aebc7ffbb0.jpeg)
