Homebridge will not broadcast open port
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**Describe The Bug:**
Homebridge has been running fine for months on my server. A couple days ago we had an isp internet outage and it completely recked homebridge. 

Homebridge is run in docker on ubuntu. 

Since the internet outage, I cannot get homebridge to show up as broadcasting in the "discovery" app from iOS. 

I have downloaded HomeAssist and can get a HomeKit broadcast. But not for HomeBridge. 

I have put homebridge on a windows machine and can see it is broadcasting.