CSCum80836 - WLC error "DHCP dropping packet (no mscb) found" for client in RUN state

[CSCO12031810]

Hi everyone. I know it is bug and it is not fixed yet. But i want to know, may be someone hava fixed this problem. Problem is: Multicast client in RUN state receiving DHCP error "DHCP dropping packet (no mscb) found" for a second unknown MAC address linked to the same device. What is interesting, how this AP can generate the second fake MAC address?

[surfr111999]

Have you found a solution to this?

I read something about enabling "passive client" on the SSID. But that needs multicast routing. I am not sure what the impact is...