Synology NAS, Tinc docker and windows

[Codera]

Hi!

I tried these two Dockers on Synology nas:
https://github.com/JensErat/docker-tinc/
https://github.com/bys-control/docker-tinc

For testing i set up a master Windows machine and a client one with also
Windows.
Connection between of them Works.
So no i try to add a Synology NAS, so i can do remote backup.
But i cannot set up any connection between the Docker container and
master Windows machine.
Ports are fowarded on both side.
I can see from the master - Windwos machine log, that the connection seems
to be working:

Got type 2 UDP probe reply 18 from xxx
Sending PACKET to xxx
Sending 6 bytes of metadata to xxx

And so one...

But i cannot ping, Access smb share on the nas. Also the NAS cannot ping
the master Windows machine.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.tinc-vpn.org/pipermail/tinc/attachments/20190611/8e1f0388/attachment.html>