Just set up the Netgear R6220 as a 801.11r roaming AP
As I wanted to expand functionality by adding a guest network I found that the menu item "Switch" under Network is not present. (in Luci)
I have found no evidence that this device would not support that. Actually I read multiply accounts of co owners reporting that they are playing with the VLAN setting. Also I vaguely remember having this option with older versions of the software.
So I am puzzled. Is something missing in the software? I am using the latest openwrt version as of today 22 sept 2021.