Earlier today I noticed that youtube was mysteriously no longer available to me. The first thing I checked was whether I could ping it…unknown host. I brought up nslookup and tried there and the primary server for Google DNS wasn’t responding to my query.
Now, in Windows and Mac, you can specify a secondary (or more on Mac) set of DNS servers…yet I don’t think I’ve ever seen them used. In this particular case, via the nslookup command I tried the secondary server and it worked…so what is the purpose of the secondary server if it isn’t used when the primary doesn’t respond?
I’m half-venting here…but I am curious if anyone knows why it isn’t used.