Network dependency is not possible between network equipments

[hahahafr]

If I connect an equipment to another through a port in glpi, if it's a computer to a network equipment, the parent-child relationship works. However if it's two network equipment together, then no parent is defined and the network dependency functionnality of Shinken is lost.

http://shinken.readthedocs.io/en/latest/05_thebasics/dependencies-in-shinken.html?highlight=parent%20child