CAFAI Liens en Vrac
nslookup is badly designed. It's a very poor tool for several reasons. It has been widely acknowledged for several years that it is a bad tool. Even the company that writes BIND states that nslookup is deprecated and may be removed from future releases of BIND. (Even though your particular operating system vendor may have packaged it separately, nslookup is in fact a diagnostic tool that is a part of the BIND package.)

Stop using nslookup right now. Start using better, less flawed, tools instead. Almost every DNS server software package comes bundled with tools to manually query the DNS for diagnostic purposes. Use the tools that came with the package that you have.

Even BIND itself comes with better tools. The company that writes BIND has in fact rewritten nslookup for BIND version 9.x . It no longer contains one of the daft design flaws. But it also no longer contains some of the functionality of the original tool, and prints a prominent warning message every time that it is invoked stating a BIND-centric version of what this page recommends — i.e. that one should stop using nslookup in favour of host and dig.

http://veggiechinese.net./nslookup_sucks.txt
(Permalink)