Syncthing has a tendency to make data connections outside the U.S., whether they arise from features for “Relaying” or “Global Discovery”. As a temporary workaround, I considered enabling Syncthing’s Discovery Server, stdiscosrv-macos, to reduce this traffic.

I grabbed the executable file here:

https://github.com/syncthing/discosrv/releases/download/v1.29.3-rc.1/stdiscosrv-macos-amd64-v1.29.3-rc.1.zip