Mention of AutoSSH in the latest @purism post (https://puri.sm/posts/the-s-in-iot-is-for-security/) prompted me to go check on the performance of my replacement for that software.
More than 300 machines on it now, and the recovery rate after a network flap is 100%. I'm not mad about that at all.
It's not the prettiest Bash ever written, but it works: https://git.staart.one/ajmartinez/ssh-tunnel-manager