Firewal is disabled on my SYNOLOGY DSM.
From network point of view we have troubleshoot and tried everything as it is described here:
Quic stop working after Synology DSM update
I have also changed wi-fi router, recreate many times nodes and strange is that before DSM update works QUIC properly also from SYNOLOGY - DOCKER nodes. Now only from W10 machines. Something scrubbed after that update.
This is error after fresh start of the NODE:
NODE is online and operates normally only QUIC is issue for some reason.
There are allowed both UDP and TCP on the router:
Contacted SYNOLOGY and DOCKER support but not relevant answers or no answers at all.