The solution from this bug report (https://bugs.launchpad.net/ubuntu/+source/linux-restricted-modules/+bug/259816/) works for me : Open a console and type : "sudo iwpriv eth1 set_vlanmode 0"
The solution from this bug report (https:/ /bugs.launchpad .net/ubuntu/ +source/ linux-restricte d-modules/ +bug/259816/) works for me :
Open a console and type : "sudo iwpriv eth1 set_vlanmode 0"