Hamony causing Homebridge to shut down under Ubuntu Desktop 20.04
**Describe the bug**
Once Harmony plugin is activated, Homebridge throws the following exception:

Error: Service name is already in use on the network
    at Registry._onProbeComplete (/usr/lib/node_modules/homebridge/node_modules/bonjour-hap/lib/Registry.js:108:27)
    at Prober.done (/usr/lib/node_modules/homebridge/node_modules/bonjour-hap/lib/Prober.js:67:10)
    at Prober.onMDNSresponse (/usr/lib/node_modules/homebridge/node_modules/bonjour-hap/lib/Prober.js:61:102)
    at EventEmitter.emit (events.js:315:20)
    at Socket.<anonymous> (/usr/lib/node_modules/homebridge/node_modules/multicast-dns/index.js:49:43)
    at Socket.emit (events.js:315:20)
    at UDP.onMessage (dgram.js:919:8)

**My Config**
{
            "name": "Harmony",
            "hubIP": "192.168.178.24",
            "mainActivity": "Fernsehen",
            "platform": "HarmonyHubWebSocket"
        }

**Expected behavior**
Running fine on Raspberry pi on Debian, but behaving buggy on Ubuntu Desktop.
Once Harmony Config is deleted, no exception is thrown.
