>      B8-27-EB   (hex)         Raspberry Pi Foundation
>      B827EB     (base 16)     Raspberry Pi Foundation
>                               Mitchell Wood House
>                               Caldecote Cambridgeshire CB23 7NU
>                               UNITED KINGDOM

b8 27 eb

recovery    b8:27:eb:c2:37:9d

pi@raspberrypi:~ $ ifconfig | egrep "(ether|flags)"
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether b8:27:eb:ad:78:e4  txqueuelen 1000  (Ethernet)
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether b8:27:eb:f8:2d:b1  txqueuelen 1000  (Ethernet)