There was a case when I needed an Internet on my desktop, but only available was on my Meizu phone. After several touching (on the phone), searching in Yandex and clicking on mynote and desktop, the desktop machine was connected to WWW.
I followed 2 advices: http://askubuntu.com/questions/359856/share-wireless-internet-connection-through-ethernet and http://askubuntu.com/questions/169473/sharing-connection-to-other-pcs-via-wired-ethernet
There was no need to set manual IP-s, so the connection was established by default.