This is a quick'n'dirty tool for checking the configuration of your local resolver and/or DNS configuration. See the included manpage, Makefile and source code for more explanations.


display version number and exit.
brief help on the command-line options.
display various useless messages.
do reverse lookup on IP address discovered.
show content of a few environment var resolver-related.
compute elapsed time of operation, not really accurate.

This software use only the basic functions like gethostbyname(3) or gethostbyaddr(3). Checkresolv use the more low-level of the resolver galaxy, so it works like any "lambda" application. Really nice when you have to catch a mysterious failure in a LAMBDA software.

Made by Thierry Boudet (Sept 2005)