Which change must be implemented to correctly configure dynamic interface on a WLC?

Dynamic interfaces on a WLC are used to manage client traffic for specific WLANs and are typically associated with a VLAN ID. For the WLC to properly handle traffic for multiple WLANs, the switch port connected to the WLC must be configured as a trunk port, passing traffic from these VLANs, thus requiring tagged VLANs for the dynamic interfaces.

The virtual interface is a special interface used for client redirection and DHCP proxy and does not typically share the same VLAN or subnet with dynamic interfaces which handle client data.

Dynamic interfaces mapped to different WLANs should typically be on different VLANs and IP subnets to segregate client traffic and provide distinct addressing.

Configuring a secondary subnet on a dynamic interface is not a mandatory or standard requirement for its correct basic configuration; it's a specific configuration for certain routing scenarios.