I did, on a fresh install.
BUT! It flippin' works now!!! 
The combination of changing the interfaces file as mentioned before and these steps made it so that it finally works. I had done the steps before but was not able to make it work. Changing the interfaces file must've done the trick. Thanks for pointing me in the right direction Ramset! 
This also keeps the benefit of being able to use SoftEthers VPN Manager software which I quite like.