Whenever I run a backup from my local machine (attic 0.16) to a remote server (attic 0.15), the backup starts nicely, runs for about 1-2 hours and then terminates with

Write failed: Broken pipe
attic: Error: Connection closed by remote host

If I list the contents of the repository later on, I see a checkpoint entry. Rerunning the backup then resumes from the point where the former backup stopped and gets a bit faster but then is also terminated with the same error.

I have tried increasing ServerAliveInterval in ~/.ssh/config for the remote server, but that didn't change much. I have read #233 which talks about a similar problem but if I got it right, it should have been fixed in version 0.15...

What can I do to run proper backups with attic?