See page 3, section 5: http://transition.fcc.gov/Daily_Releases/Daily_Business/2...

		teh_klev on Aug 18, 2015 \| parent \| context \| favorite \| on: FCC Fines Smart City $750K for Blocking Wi-Fi See page 3, section 5: http://transition.fcc.gov/Daily_Releases/Daily_Business/2014... They were sending deauthentication packets.