I've got a similar problem. I use a studentnet, were I can either plug in directly into the wall and log in once every day or setup a router with a PPTP-connection to automatically log into the student-network. I've got the latter set up and it works like a charm.
Thankfully I had a rootable CC so I could set it to use my ISP's DNS but I would love if it if I were able to use a different DNS (aka Unlocator/Unblock) to enjoy the US-version of Netflix, but every time I change the DNS-servers my internetconnection dies.
Is there any way to actually do fix my problem? I know this is more of a network-question than a CC-one, but CC is included in the problem
I use a Netgear WNR3500LV2 as my router.