Devices dependencies.

Hi we monitor alot of different sites and many equipments.

we're looking to make this kind of monitoring :

if the router goes down we want to only receive email for this device. and if other devices behind this router are down we want to have an email for each one.

so i set dependencies for each devices behind this device on the ping of the router.

my problem is when the router comeback all the equipments are pause by dependencies and wont resume. even if i try to resume it manually it doesnt. the only way is to change dependency and put it back to inherit on each devices.