Comment 5 for bug 202605

I also confirm this problem

In order to setup the network we can do two things:
Assuming that our network interface is eth0, go to terminal and do:

sudo ifup eth0

everytime we boot our computer.

or we can also do as a permanent solution

Add to the /etc/network/interfaces file

auto eth0 as in the example below
----------------
auto lo
iface lo inet loopback

auto eth0 <-------------------------------- This line is missing in the original file.
iface eth0 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1
---------------------------

REBOOT our computer.

In order to not having problems Network Manager should generate with the auto eth0 line included.