[Unit]
Description=Update bogon list every 4 hour.
Requires=network-online.target
After=network-online.target

[Timer]
# Every 4 hours, starting from midnight
OnCalendar=*-*-* 0/4:0:0

# We don't really need to set Persistent because the service should be started on boot (WantedBy=default.target in updateBogonsOnBoot.service)
# Persistent=true

[Install]
WantedBy=timers.target