Home devices do not respond, need to restart homebridge
### Current Situation

Hi folks,
I am running hombridge as docker container on my Synology NAS. Container network is host, sitting behind Synology's reverse proxy. I am using Synology Firewall and opened up several ports (src ip /24 home-network) as described on the wiki-page (8581 and 5353, also port declared in the config.json-file).

**Issue**
I am facing recurring issued with "device is not responding" on Home devices coming from my homebridge. I didn't change any configuration on my NAS, did not reset it at all or changed configuration in the container.
I had this problems many times ago where it turned out, that homebridge changed a port configuration after updating the container via watchtower.

**Reproducing the failure**
Restarting homebridge solves the problem for a dynamic time slot (2-4 hours).

**What I already did**

- tcpdump on my NAS to see what ports are being used during control of home devices attached through homebridge - ports that have been published on wiki page seem to be enough...
- checked external firewall configuration of blocked ports to Apple servers - didn't change anything, same behaviour

**next steps**

- I recently shut down the firewall on my NAS to see if the problem is gone...
- restarting Synology NAS and see what happens...

I know there were some issues with "bad coded plugins", but I didn't change any plugins and all ran fine for months!

### Host Operating System

Synology DSM 7

### Host Architecture

x86_64 / amd64