def _get_mac_address_linux():
'''
Determine the MAC address of the system. ``eth0`` has preference if
it exists, otherwise the first valid MAC address in the adapter list
is returned.
Linux version.
:return: MAC address of the system or ``None`` if a valid MAC address is
not found.
:rtype: str or None
'''
import salt.utils.network as network # pylint: disable=import-error,3rd-party-local-module-not-gated
try:
interfaces = network.interfaces()
# 'eth0' has preference if it exists and has a valid MAC address.
if 'eth0' in interfaces:
hw_addr = interfaces['eth0'].get('hwaddr')
if hw_addr and hw_addr != '00:00:00:00:00:00':
return hw_addr.upper()
# When 'eth0' doesn't exist, pick the first interface that has a valid
# MAC address.
for val in six.itervalues(interfaces):
hw_addr = val.get('hwaddr')
if hw_addr and hw_addr != '00:00:00:00:00:00':
return hw_addr.upper()
except Exception: # pylint: disable=broad-except
pass
return None
def test_interfaces(self):
'''
Test for return a dictionary of information about
all the interfaces on the minion
'''
with patch.object(salt.utils.network, 'interfaces', return_value={}):
self.assertDictEqual(network.interfaces(), {})