I receive this error when trying to configure NBAR on my core. Haven't found anything in the NBAR documentation about restrictions with a PFC3. Any suggestions?

Note: It is a routed (L3) interface.

NBAR 'protocol-discovery' command cannot be turned on this interface because of the following reason: Interface is a LAN port and NBAR/STILE is not supported on LAN interfaces in PFC3.