Date: Mon, 3 Jun 2013 19:57:07 -0700 From: Doug Hardie <bc979@lafn.org> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: System Calls that do DNS Message-ID: <F5EBDC53-CBA3-415D-B7CD-1EC873692348@lafn.org>
next in thread | raw e-mail | index | archive | help
I have an unusual situation. A program is doing a DNS lookup and often = the IP address has no reverse DNS entries. As a result the program = hangs for several timeouts. The call is not being made directly in its = code, but is occurring in a system call. There are no specific calls to = DNS, its something else doing it. I have been trying to track down = which system call is doing it, but without success so far. I have tried = syslog calls around each of the system calls I thought might be the = culprit, but my guessing is not very good. How can I identify the = system call that is calling DNS? If I can find it, I hopefully can find = another way to do whatever it does that does not involve a reverse DNS = lookup.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?F5EBDC53-CBA3-415D-B7CD-1EC873692348>