PXE boot, URL_Helper.py [Warning] error

[jimmy-jad]

**edit** seems i was so tired i forgot to put in the image!**

here is an image of it:
http://i.imgur.com/UoeMLFn.jpg

Now, my cluster controller has 2 interfaces, eth0 - Local router managing DCHP, and eth1 - managing the nodes, do i have to allow the nodes internet accesses threw eth0 ?
Need any more info of course just ask and ill run it threw, thanks! ~Jz