When I delete a host and rediscover it then reprovision with the same DNS name, dhcp proxy fails by saying duplicate entry.
I have to edit /var/lib/dhcpd/dhcpd.leases and manually remove the entry for the mac.
When rebuilding or recreating, dhcp is able to either reuse a still valid dhcp lease or at least overwrite the previous information without breaking.
Foreman and Proxy versions:
Foreman 2.4 with Katello 4.0
Distribution and version:
Installed on RHEL 7