[yubiox]

Probably too late to post here but the timing of this article was interesting. I use the ~. on a daily basis because something in the firewall at work was causing my idle ssh connections to hang. But just yesterday morning right before reading this article I added ServerAliveInterval 30 in the client ssh config to see if it would help and guess what, the connections were not stuck today.

[hddqsb]

You might also want to set ServerAliveCountMax to something high, the default is 3 which means if your network is down for 3*30s the SSH client will disconnect.