VMG3925-B10B - catch dns requests and forward to local DNS

More or less the same concept, for DNS. 

Sorry buddy, port redirection is not my expertise. I am more of the Server and OS guy. A little bit of the Networks, and that was a long time ago. The rest I leave it to the Infrastructure guys to deal with now a day. Back when I used to take cisco router course, that is how I know how to read and understand your iptable-rule. But it looks totally different than what you have thou.