DHCP fixed address, roaming and DDNS [ Edited ]

[#1]

Hi all,

we utilize dhcp with ddns. Some roaming users need fixed addresses in multiple environments. But fixed addresses don't update ddns by default and it's not recommended to enable that option, because the dns records will never be deleted again, even if the lease terminates.
So how can we achieve the goal to have roaming users with fixed addresses and using ddns without having any double records, which would result in dns-round-robin?

regards,

Nico