pfSense

If you try to create multiple DHCPv6 reservations for a host with multiple interfaces, it's possible to create one reservation, but the second fails with the following error message:

The following input errors were detected:

This Hostname, IP or DUID already exists.

In this case, KEA DHCP is being used.

It's allowable to have multiple reservations for a host where there are multiple unique interfaces. This apparently fails because it's only considering the hostname and/or DUID, but not the IAID or MAC.

Considering how common it is for hosts to have multiple interfaces (e.g., most servers and laptops), this should be fixed.