vlan support for internet interface on MK63

The MK63 ( https://www.netgear.com/support/product/mk63.aspx )should be able to tag ssid traffic on the internet interface so the wlan gateways could be placed on an existing router/firewall. The current configuration options seem to exclude the possibility that the router will be connected to anything other than the internet.

Desired feature: Ability to configure internet interface to tag traffic from ssid vlans and bridge networks to external firewall. The goal would be to have the wlan gateway, dhcp server, and routing managed from the external firewall, not the MR60. (diagram attached)