dhcp/dhcp-4.1.1-dhclient-exec-filedes.diff

diff --git a/client/dhclient.c b/client/dhclient.c
index 69dcc91..15c31a5 100644
--- a/client/dhclient.c
+++ b/client/dhclient.c
@@ -3173,6 +3173,12 @@ int script_go (client)
 		 */
 		if (leaseFile != NULL)
 			fclose(leaseFile);
+		if ((i = open("/dev/null", O_RDWR)) != -1) {
+			dup2(i, STDIN_FILENO);
+			dup2(i, STDOUT_FILENO);
+			if (i > STDERR_FILENO)
+				close(i);
+		}
 		execve (scriptName, argv, envp);
 		log_error ("execve (%s, ...): %m", scriptName);
 		exit (0);