Change to debug level for DHCP4_PACKET_DROP_x
Change to debug level for DHCP4_PACKET_DROP_x:
The DHCP4_PACKET_DROP_x messages may not have the correct visibility due to the high debug level they get generated at.
Message in particular DHCP4_PACKET_DROP_0013 is generated at debug level DBGLVL_TRACE_BASIC and greater.
Would it be possible to generate this message at a lower level - between levels 5 - 10 has been suggested.