How can I root LG Optimus Net (LG P690)? I recently bought a new phone and decided to play with my old LG P690 with Gingerbread 2.3.4.

I want to root it using a Linux PC. 
I tried to exploit it using psneuter and zergRush.
I pushed them into the phone and gave it executable permissions. 
Both tools are failed to obtain root access.

Rebooting into recovery mode just factory resets the phone without asking a thing. 

Are there any other options left to root the phone?
In my experience I've had multiple devices rooted with KingoRoot 
It's pretty easy as it requires only a few clicks. You can see that in the Devices that your model is supported.