I wouldn't say that I know a lot about the topic, just been dealing with trying to bring up an IPQ4019 device and trying to understand what the options are. My initial feeling is that VLAN configuration might eventually be possible, within the pre-assigned "groups", either by patching or by modification of the DTS. Either would require a custom build. I'm impressed by the three-radio device I'm working with, but don't know how far I can extend its utility.