infiniband – find out the GUID address for the device to be renamed

# ip link show ib0
5: ib0: mtu 2044 qdisc pfifo_fast state UP qlen 256
link/infiniband 80:00:00:48:fe:80:00:00:00:00:00:00:00:02:c9:03:00:e6:d4:51 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff