How to get syncthing to actually start syncing

[Pander]

I am using syncthing on many different devices without any problems. On PINE64 with Ubuntu Xenial and longsleep's kernel I installed syncthing from https://github.com/syncthing/syncthing/r....21.tar.gz It start and I can connect to other devices but the actual syncing is not starting. Is this an ethernet problem or could it be something else? How do I go about finding the cause and fixing it? Are there people here that got it working and if so, how? Thanks