How to use PXE provisioning with multiple subnets in Red Hat Satellite 6?

Issue

• When trying to create a host using hammer below error is seen:

  Could not create the host: Create DHCP Settings for         
  client.example.com task failed with the following error: ERF12-6899         
  [ProxyAPI:ProxyException]: Unable to set DHCP entry         
  ([RestClient::Conflict]: 409 Conflict) for Capsule