Not working with Homebridge and a Windows PC
### Backstory
I'm trying to get this to work on a HOOBS Raspberry Pi, the plugin installed and is attempting to ping my PC. As far as I can tell, I've set up everything to allow it to ping the device. Whenever it pings my PC though, it gets no reply and thinks it's offline?

### Issue
I feel that this could be an issue with my configuration, not 100% sure.

### Environment
* HOOBS Homebridge 3.2.9
* node version: 12.16.3
* homebridge version: Unsure but most likely the latest as this HOOB update is only 3 days old
* homebridge-wol version: Latest

### Configuration
My configuration looks like this:
```
"accessories": [
        {
            "accessory": "NetworkDevice",
            "plugin_map": {
                "plugin_name": "homebridge-wol",
                "index": 0
            },
            "name": "Veeraj's PC",
            "pingInterval": 2,
            "pingsToChange": 5,
            "pingTimeout": 1,
            "pingCommandTimeout": 0,
            "startCommandTimeout": 0,
            "wakeGraceTime": 45,
            "wakeCommandTimeout": 0,
            "shutdownGraceTime": 15,
            "shutdownCommandTimeout": 0,
            "log": true,
            "logPinger": true,
            "debugLog": true,
            "returnEarly": false,
            "ip": "192.168.0.176",
            "mac": "<my-pc-mac-address>"
        }
    ],
```

### Log
When I follow these steps:
1. Make sure `logLevel` is set to `Debug` on all `NetworkDevice` accessories
2. Run `homebridge`
3. Let it run for a couple of minutes
4. Try to turn a device on or off using the plugin
5. Wait one minute
6. Repeat step 4

I get the following log:
```
26/10/2020, 10:07:38 [Veeraj's PC] Got state change from pinger for "Veeraj's PC" (192.168.0.176): offline
26/10/2020, 10:07:39 [Veeraj's PC] Attempting to ping "Veeraj's PC" (192.168.0.176)
26/10/2020, 10:07:40 [Veeraj's PC] Result of pinging "Veeraj's PC" (192.168.0.176): offline
26/10/2020, 10:07:41 [Veeraj's PC] Attempting to ping "Veeraj's PC" (192.168.0.176)
26/10/2020, 10:07:42 [Veeraj's PC] Result of pinging "Veeraj's PC" (192.168.0.176): offline
26/10/2020, 10:07:43 [Veeraj's PC] Attempting to ping "Veeraj's PC" (192.168.0.176)
26/10/2020, 10:07:44 [Veeraj's PC] Result of pinging "Veeraj's PC" (192.168.0.176): offline
26/10/2020, 10:07:45 [Veeraj's PC] Attempting to ping "Veeraj's PC" (192.168.0.176)
26/10/2020, 10:07:46 [Veeraj's PC] Result of pinging "Veeraj's PC" (192.168.0.176): offline
26/10/2020, 10:07:47 [Veeraj's PC] Attempting to ping "Veeraj's PC" (192.168.0.176)
26/10/2020, 10:07:48 [Veeraj's PC] Result of pinging "Veeraj's PC" (192.168.0.176): offline
26/10/2020, 10:07:48 [Veeraj's PC] Got 0 positives out of 5
```

