Unable to get default network address while attempting to stream cameras
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# Live Streaming Issue

### Describe the live streaming issue
<!-- ✍️edit: --> When I attempt to stream a camera, I get no response. The logs indicate I am unable to get a default network address from homebridge/camera-utils (details below). I do get cached snapshots and that appears to work fine. 

### Screenshots/Logs
<!-- ✍️edit: --> [Ring] Preparing Live Stream for Side
[Ring] Failed to prepare stream for Side (0.408s)
[Ring] Error: Unable to get default network address
    at Object.<anonymous> (/Users/brandon/.hoobs/node_modules/@homebridge/camera-utils/lib/default-ip.js:25:19)
    at Generator.next (<anonymous>)
    at fulfilled (/Users/brandon/.hoobs/node_modules/@homebridge/camera-utils/lib/default-ip.js:5:58)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)

I get the same issue for all cameras (2 floodlight, 1 doorbell, 1 spotlight) using their appropriate names.

### Recommended solution
<!-- ✍️edit: --> If this is a homebridge issue and not ring issue I'm happy to submit it elsewhere, but it seems like @dgreif is the primary author regardless. I propose the cause of the issue is found and either fixed in code, or a root cause is described to fix on the user end. I'm happy to run debug commands/scripts as needed to help debug

### Environment
<!-- ✍️edit: -->
 - Ring Camera: 1x spotlightw_v2, 1x doorbell_v4, 2x floodlight_v2 
 - OS: OSX 10.15.4
 - Node.js: 12.18.3
 - NPM: 6.14.6
 - homebridge-ring (if applicable): 9.14.0
 - homebridge (if applicable): N/A (hoobs)
 - hoobs (if applicable): 3.3.1

### Network Environment
UniFi AP-AC-Pro
UniFi Switch 8 POE-150W
UniFi Security Gateway 3P
