[trav4225]

My previous ISP actually just blocked all DNS traffic that wasn't to/from their servers. I had to tunnel my DNS traffic (ridiculous!)...

[spiznnx]

That's a little ridiculous. I've read[0] that Chromecasts, which are fairly common, won't work if Google DNS is unreachable (also by itself an issue), so I'm surprised they didn't get a lot of complaints.

0. https://news.ycombinator.com/item?id=19170671