[vox_mollis]

This cannot possibly be right. There was a DC21 talk regarding DNS request misfires due to bit flips in non-ECC DRAM, and the researcher was able to collect a surprisingly large number of requests on the basis of this.

Edit: found it: https://www.youtube.com/watch?v=ZPbyDSvGasw

[ketralnis]

Importantly, those DNS packets go through a number of systems that are not clients or servers. Wifi, microwave antennae, undersea cables, consumer routers, unpowered hubs, you name it. It's hard to know whether these bit flips are actually coming from cosmic rays or EM interference or rare decompression bugs.