I will like to share how I manage to make a bridge between Ethernet to Wifi.
If all what your looking for is just to simply share your Internet connection
you don't necessarily need a bridge for that and it is easier to do so by
following some other how to on the Internet like the following instead:
http://ubuntuhandbook.org/index.php/2014/09/3-ways-create-wifi-hotspot-ubuntu/
I my self needed a way to connect to an Ethernet network wirelessly.
First will need to install some packages:
sudo apt-get install iw hostapd rfkill bridge-utils
Now make sure your wireless device supports the access point mode by running
the following command:
iw list
And look where it says “Supported interface modes” and “AP” should be
listed, otherwise your card will not work to make a bridge.
Edit the following file:
gksudo gedit /etc/network/interfaces
Adding the following lines:
auto br0
iface br0 inet dhcp
bridge-ports eth0 wlan0