Tomato Router OpenVPN - Selective Routing/DNS leak

[fchang 1]

Just a quick question, I have OpenVPN setup in my Shibby Tomato router to use airvpn. No issues until I started to selectively route a few of the Source IP through the tunnel (using the GUI OpenVPN Client tab Routing Policy) as I can't Netflix to work. So now, my ISP's DNS is showing up in DNS leak test.

 

I've tried to insert static DNS in the basic network config to use another DNS server, but nothing worked. DNS Leak test still show me that I am using my ISP's DNS server.

 

Anyone has this problem when selectively routing a few IPs through the tunnel using Tomato?