Created attachment 898378 [details]
screenshot1

Description of problem:
in manage network dialog on externally provided network there is a ticked check box Required All while Required check boxes on cluster are unchecked and immutable

check boxes are mutually contradicting

either Required all + Required should be unticked
or
Required all + Required should be ticked

Version-Release number of selected component (if applicable):
Required all + Required should be unticked

How reproducible:
100%

Steps to Reproduce:
1. define neutron external provider on rhevm
2. import/create network on external provider 
3. Networks -> your_external_net -> clusters -> Manage Network (see screenshot)