Cannot stream cameras over local network
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**Describe Your Problem:**
I am unable to stream rtsp video locally, either over Wi-Fi e.g. iOS device or hard-wired Mac. This is true for a plugin I work on (simplisafe3) which uses the new bridged camera setup but I also setup a container with just instances of camera-ffmpeg and have the same problem. In both cases the plugin does seem to stream correctly its just never visible in Home.app (and eventually throws **No Response**). See video below. Obviously I can provider more (debug) logs but I dont see any real answer there. This one is a real head-scratcher to me...

**Logs:**
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```
[5/17/2020, 1:05:30 AM] [Camera-ffmpeg] Snapshot from Test Solo MJPEG at 480:270
[5/17/2020, 1:05:31 AM] [Camera-ffmpeg] Start streaming video from Test Solo RTSP with 1280:720@10fps (299kBit)
[5/17/2020, 1:06:02 AM] [Camera-ffmpeg] Stopped streaming
[5/17/2020, 1:06:04 AM] [Camera-ffmpeg] Snapshot from Test Solo RTSP at 480:270
[5/17/2020, 1:06:04 AM] [Camera-ffmpeg] Snapshot from Test Solo MJPEG at 480:270
[5/17/2020, 1:06:04 AM] [Camera-ffmpeg] Snapshot from Test Solo FLV at 480:270
ffmpeg -re -i http://docs.evostream.com/sample_content/assets/bun33s.flv -t 1 -vf scale=480:270 -f image2 -
[5/17/2020, 1:06:31 AM] [Camera-ffmpeg] Start streaming video from Test Solo RTSP with 640:360@10fps (132kBit)
[5/17/2020, 1:06:47 AM] [Camera-ffmpeg] Stopped streaming
```

**Docker Start Command:**
<!-- Show how you are starting the docker container -->
<!-- docker-compose? provide the full docker-compose.yml file -->

```
docker run --net=host 
  --name=homebridge-test2 \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=America/Los_Angeles \
  -e HOMEBRIDGE_CONFIG_UI=1 \
  -e HOMEBRIDGE_CONFIG_UI_PORT=8010 \
  -v /home/docker/homebridge-test2:/homebridge \
  oznu/homebridge:ubuntu
```

**Homebridge Config:**

```json
{
    "bridge": {
        "name": "Homebridge F360",
        "username": "0E:46:CD:B1:F3:60",
        "port": 53276,
        "pin": "031-45-154"
    },
    "accessories": [
        {
            "name": "Dummy Solo",
            "stateful": false,
            "reverse": false,
            "time": 1000,
            "accessory": "DummySwitch"
        }
    ],
    "platforms": [
        {
            "cameras": [
                {
                    "name": "Test Solo FLV",
                    "videoConfig": {
                        "source": "-re -i http://docs.evostream.com/sample_content/assets/bun33s.flv",
                        "debug": true
                    }
                },
                {
                    "name": "Test Solo RTSP",
                    "videoConfig": {
                        "source": "-re -i rtsp://170.93.143.139/rtplive/470011e600ef003a004ee33696235daa",
                        "audio": false
                    }
                },
                {
                    "name": "Test Solo MJPEG",
                    "videoConfig": {
                        "source": "-re -i http://wmccpinetop.axiscam.net/mjpg/video.mjpg",
                        "audio": true
                    }
                }
            ],
            "platform": "Camera-ffmpeg"
        }
    ]
}
```

**Screenshots:**
<!-- If applicable, add screenshots to help explain your problem. -->
Video: [https://imgur.com/a/iSab781](https://imgur.com/a/iSab781)

**Environment:**

* **Host Operating System**: Ubuntu 20.04 LTS
* **Docker Version**: 19.03.8 (API: 1.40)
* **Image Tag / Type**: ubuntu

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