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Why doesn nslookup work?

April 26, 2017nslookup

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Why doesn nslookup work?

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Justin Walker, who is purported to be much learned in such things, sheds some light on this in an email he sent this weekend. (He also wins the “Coolest Job Title of the Year” award, hands down 🙂 Note that command-line nslookup still works okay if you give a working DNS server as the second argument, ie: nslookup zieg.com 207.229.143.1 Miscellaneous Dial-up/PPP Notes Why the /var/run/resolv.conf? It’s different from the BSD that I used to know, but it makes sense to me that /var/run is where stuff appears while a program is running. For example, fire off PPP Connect and magically /var/run/resolv.conf appears and since /etc/resolv.conf is a symbolic link to it, the contents are magically there. If it did not work this way, you might naively edit resolv.conf only to have it clobbered when PPP Connect came up. As a side note, I’ve done a little poking into the whole PPP thing. It appears that PPP Connect eventually calls an Apple pppd, which in turn fires off the UNIX pppd. Somewhere al