I have a RB2011, and a month or so ago, it stopped being able to do anything DNS related. I've had it on a shelf and pull it down to tinker with every once in a while, but can't get it working. Just pulled 6.46.1, updated and reset the config to default, and still can't get a DNS resolve.
I have it behind my ISP's router, but set into DMZ, and I can see the Mikrotik getting the external facing IP as its own. DNS servers are default what the ISP sends down, but I've tried in the past with google DNS as well, and that doesn't seem to do anything.
Where's a good place to start troubleshooting this problem?