Index: vl.c
===================================================================
RCS file: /sources/qemu/qemu/vl.c,v
retrieving revision 1.260
diff -u -p -r1.260 vl.c
--- vl.c	28 Feb 2007 21:59:44 -0000	1.260
+++ vl.c	6 Mar 2007 16:23:26 -0000
@@ -3620,6 +3620,14 @@ static int net_tap_init(VLANState *vlan,
         pid = fork();
         if (pid >= 0) {
             if (pid == 0) {
+                int open_max = sysconf (_SC_OPEN_MAX), i;
+                for (i = 0; i < open_max; i++)
+                    if (i != STDIN_FILENO &&
+                        i != STDOUT_FILENO &&
+                        i != STDERR_FILENO &&
+                        i != fd)
+                        close(i);
+
                 parg = args;
                 *parg++ = (char *)setup_script;
                 *parg++ = ifname;