tree 16bae8334fe283ca4e9047b90e1321aa83f8491e
parent 6d5bdf293d399d9986179ae0987e4e058a27e324
author Jong Wook Kim <jongwook@google.com> 1529092730 -0700
committer Jong Wook Kim <jongwook@google.com> 1530059671 -0700

Display "Unavailable" for default MAC

Display "Unavailable" when the current MAC address is
"02:00:00:00:00:00" which indicates that we couldn't get the actual
device MAC address.

Bug: 110043449
Test: Unittest (make RunSettingsLibRoboTests -j40)
Change-Id: I2adab477a43262dd0067bc30b0a9ca4d35dc4298