pping.conf lets you spread the pping-task over several hosts via the use of groups_included and groups_excluded. We use this feature because we have some hosts only reachable through a tunnel.
The groups_included works fine: Our second pping-host only pings the host in the device group specified. But our main NAV host still pings all hosts, even though the exact same device group is listed in groups_excluded.
--Ingeborg