I have 4 APs at the office all R510s with R510_22.214.171.124.64 - for some reason my Sonos can't even find it. I have 2.4GHz enabled. I know with some APs I've worked with in the past I've had to enable multicast. I couldn't find that in the GUI. I found a very unclear thread that sounded like you couldn't use unleashed or might need a zone director - I couldn't make heads or tails of what the environment that does or doesn't work with Sonos. Can anyone answer for my specific environment?