Heya,

as the subject suggests. If i try to add a new host with a hostname that was defined earlier Foreman does not show a warning.
It simply fails while adding the dhcp reservation: http://pastebin.centos.org/16936/
This also occurs while using the Discovery plugin (3.0.0).

In earlier versions, a popup was displayed with a warning which let me choose to overwrite the existing reservation with a new one.