# Hardware watchdog for unattended operation.
#
# PID1 pets /dev/watchdog0 (bcm2835_wdt) every RuntimeWatchdogSec/2. If systemd
# itself wedges for longer than RuntimeWatchdogSec, the chip hard-resets the box (bcm2835 max is 15s, hence 10s here; wayback uses 20s) —
# the only way to recover a hung router with nobody there to open the lid.
# (See the EC-latch / USB-hub-hang history.) RebootWatchdogSec also guards against
# a reboot that hangs partway.
[Manager]
RuntimeWatchdogSec=10s
RebootWatchdogSec=5min