Could someone please have a look at PR 6410?

The bug is very easy to reproduce (I included a minimal program and
instructions on how to reproduce a failure scenario in the PR).  The
bug is also very easy to fix, and a patch was included, so I'm not
sure why this PR was ignored.  If it's missing some important
information, please let me know so I can provide the needed
information.

The patch contained in the PR will no longer apply cleanly, because
the source file has been modified.  Here's an updated patch.

--- /usr/src/lib/libc/net/res_send.c_orig	Sun Nov 15 18:27:48 1998
+++ /usr/src/lib/libc/net/res_send.c	Wed Apr 28 18:05:13 1999
@@ -498,6 +498,8 @@
 			 * Use datagrams.
 			 */
 			time_t seconds;
+			time_t start_time;
+			time_t end_time;
 			struct pollfd dsfd;
 			struct sockaddr_in from;
 			int fromlen;
@@ -604,8 +606,14 @@
 				seconds = 1;
 			dsfd.fd = s;
 			dsfd.events = POLLIN;
+			start_time = time(0);
+			end_time = start_time + seconds;
 wait:
+			seconds = end_time - start_time;
+			if (seconds < 0)
+				seconds = 0;
 			n = poll(&dsfd, 1, (int)(seconds * 1000));
+			start_time = time(0);
 			if (n < 0) {
 				if (errno == EINTR)
 					goto wait;

--
entropy -- it's not just a good idea, it's the second law.