Could you clarify exactly what you mean when you say that your MAC is
What happens when you open the menu for Unity's Network Indicator, select
Edit Connections, and then click on the Edit button for the
Do you see
00:00:00:00:00:00 as the only possible value for
Device MAC address? (See example in the third (last) screenshot below.)
For whatever it is worth, the contents of my
NetworkManager.conf file differs from yours. I do not have the entry
Below is an excerpt from the online documentation for the NetworkManager configuration file describing
Set devices for which NetworkManager shouldn't create default wired
connection (Auto eth0). NetworkManager creates a default wired
connection for any wired device that is managed and doesn't
have a connection configured. List a device in this option to
inhibit creating the default connection for the device.
I am not sure that the
no-auto-default entry is the cause of your problem. But you could still try the following just to rule it out.
Create a backup copy of the file. One way to do this would be by using the copy command below.
sudo cp NetworkManager.conf NetworkManager.conf.backup
Use a text editor, for example
gedit, to edit
NetworkManager.conf and delete the
no-auto-default line to see if it makes a difference.
sudo gedit /etc/NetworkManager/NetworkManager.conf