SSH disconnects and Wi-Fi
In the afternoon I suddenly figured out why my SSH connections to a
virtual machine kept getting disconnected despite having the following
two lines in my ~/.ssh/config:
ServerAliveInterval 30
ServerAliveCountMax 4
It turned out that the virtual machine still used Wi-Fi to connect to
the local network, and because I am quite far away from the router
this connection drops regularly. Switching the VM to cabled network
interface en0 fixed this issue.