We are using the Acer C710 series Chromebook. We are getting a lot of:
Network Connection Error
Failed to connect to network "our SSID": DHCP lookup failed.
Connecting to both an open SSID and one with a pre-shared key. Seems to affect us mostly when using the 7962 AP's, and not as much on the 7982's.
Our firmware is on 9.5.1, but we'll try updating to 9.6.1 on Friday to see if that helps.