[wolletd]

Name resolution problems are the most bizarre.

And they happen at every level and can combine beautifully. I had a DNS server flooded with Format Error messages, because NTP Pool DNS sent an invalid response for a specific query and two (yet to be identified) clients sent (and still send) that query every second or so, because the response never reaches them. And as the upstream query failed, the DNS server would send the same query every second again to a bunch of other DNS servers, every single response generating another Format Error. Dozens of log lines per second.

Those two generate about 1GB of waste traffic per month. And that's the two buggy machines talking to a small DNS server I manage. I wonder how many junk traffic public DNS servers generate.