Here is an interesting one that caused me to go digging into themoderate depths of DNS arcana:

; sdig ns just-dust.comdns1.name-services.com.dns2.name-services.com.dns3.name-services.com.dns4.name-services.com.dns5.name-services.com.; dig mx servidor134.just-dust.com[...];; [...] status: SERVFAIL

When you query an authoritative nameserver for a record that doesn'texist, what you get back is a reply with status NOERROR, the aa bit set, no ANSWER section, and the zone's SOA record asthe sole record in the AUTHORITY section. (And no ADDITIONAL section.)

When you query a nameserver for a record in a zone that it doesn'tserve, what you get back is a reply with status NOERROR, no ANSWERsection, some zone's NS records, and some

At least at one point, there were a lot of people who loudly couldn'tunderstand why C++ was still around as a going concern. After all,didn't Java have it beat hollow, as Java was a much more productiveobject oriented language to develop in?

Such people implicitly believe that that problem that built C++ is'building object oriented programs'; now that there was a well knownbetter solution to that problem, they couldn't see why C++ didn'

Although we weren't going to use our new gigabit backbone connection immediately, I wanted to check that we reallycould get something close to gigabit performance through it and thateverything was working smoothly. When you're doing network performancetesting, you really need to do it from a platform that you trust, sothat any slowness can be attributed to the stuff in the middle andnot to your end having issues.

As it happened, the most trustworthy machine for this was my officeworkstation. But since it was