Airwave just reports what the controller sends it in AMON. If you want to dig into it, you will plenty of free time and to open a TAC case, then fight over whether it's an Airwave issue (is not) or a controller issue (is) and then setup and capture DHCP+AMON and then correlate the captures, then get a bug filed if something wrong is found.
:) good luck ( I can help to direct to you if you want to tackle it yourself, just let me know.)