We have Dish and haven't used DNS for years. We simply call (or use their chat option on line) to have them change our service address in order to get the locals. We actually like this better than when we did get the east or west coast feeds, because we now always have the area stations with weather, goings on etc.
This may only be an option if your a FTer and don't have another receiver at a sticks and bricks.
Some don't like this option as they either find spending the five minutes to call or resetting pre-set network DVR recording channels too much hassle. However, with the exception of the winter, we are always on the move, but have just not found it much of a deal. Many of our regular set recordings are on other than the networks, and the ones that are network we reset. No biggie.