> dmesg | grep em
em0 at pci8 dev 0 function 0 "Intel I210" rev 0x03: msi, address
00:25:90:b8:82:b8
em1 at pci9 dev 0 function 0 "Intel I210" rev 0x03: msi, address
00:25:90:b8:82:b9
em2 at pci12 dev 0 function 0 "Intel I350" rev 0x01: msi, address
00:25:90:b8:82:ba
em3 at pci12 dev 0 function 1 "Intel I350" rev 0x01: msi, address
00:25:90:b8:82:bb
em4 at pci12 dev 0 function 2 "Intel I350" rev 0x01: msi, address
00:25:90:b8:82:bc
em5 at pci12 dev 0 function 3 "Intel I350" rev 0x01: msi, address
00:25:90:b8:82:bd
> ifconfig em1 hwfeatures
em1: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> mtu
1500
hwfeatures=10<VLAN_MTU> hardmtu 9216
lladdr fe:e1:ba:d0:1d:61
index 4 priority 0 llprio 3
trunk: trunkdev aggr0
media: Ethernet autoselect (1000baseT full-duplex,master)
status: active
> ifconfig em5 hwfeatures
em5: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> mtu
1500
hwfeatures=10<VLAN_MTU> hardmtu 9216
lladdr fe:e1:ba:d0:1d:61
index 8 priority 0 llprio 3
trunk: trunkdev aggr0
media: Ethernet autoselect (1000baseT full-duplex,master)
status: active
