I have a similar setup as a fallback method to make sure I can always access my local server at home on any network (the primary methods are using zerotier and

I have a similar setup as a fallback method to make sure I can always access my local server at home on any network (the primary methods are using zerotier and opening a port on my router), but I used autossh managed by supervisord to make sure the ssh tunnel stay up. Without autossh, the ssh tunnel sometimes randomly closed. I tried configuring ServerAliveInterval to some low value but the issue still happen sometimes, and when it happened sometimes the port it binds on the vps can't be reused anymore (port in use error). Autossh fixed all of those issues.