6.0RC7 in cli /ip address interface all is (unknown)

Hi,

I just update my RB2011 to 6.0RC7, and find when I use " [/ip address get [/ip address find interface=ether10 ] address]" it show error input does not match any value of actual-interface, but that is no problem in 5.22, I use “/ip address print detail”, all interface and actual-interface show “(unknown)”, but in winbox it can show the interface.

Thanks
Alan