The bge Gigabit Ethernet driver is a  multi-threaded,  load-
     able, clonable, GLD-based STREAMS driver supporting the Data
     Link  Provider  Interface,  dlpi(7P),  on  Broadcom  BCM57xx
     (BCM5700/5701/5703/5704/5705/5705M/5714/5721/5751/5751M/5782/5788
     on x86) Gigabit Ethernet controllers fitted  to  the  system
     motherboard. With the exception of BCM5700/BCM5701/BCM5704S,
     these devices incorporate both MAC  and  PHY  functions  and
     provide three-speed (copper) Ethernet operation on the RJ-45
     connectors. (BCM5700/BCM5701/BCM5704S  do  not  have  a  PHY
     integrated into the MAC chipset.)