SSH dies after 16 minutes

### Description

qemu, m3, sonoma, ubuntu 23.10 guest, very fresh install via brew. tried with and without qemu window enabled. (I'm able to type in the qemu window, but the SSH session doing `watch date` freezes, and running a new `lima` command gets stuck as SSH doesn't seem to respond.) limactl ls shows running (not surprising as qemu works), and limactl stop and start also works immediately.

any tips how to debug this further?

edit: of course now it's not happening even after 1 hour of inactivity, it happened 3 times before :<
edit2: so last session lived about 1h40m