ipv4: mode 0555 in ipv4_skeleton

vpnc on today's kernel says Cannot open "/proc/sys/net/ipv4/route/flush":
d--------- 0 root root 0 2008-08-26 11:32 /proc/sys/net/ipv4/route
d--------- 0 root root 0 2008-08-26 19:16 /proc/sys/net/ipv4/neigh
Signed-off-by: NHugh Dickins <hugh@veritas.com>
Acked-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/route.c

@@ -3121,9 +3121,9 @@ static struct ctl_table empty[1];
 static struct ctl_table ipv4_skeleton[] =
 {
 	{ .procname = "route", .ctl_name = NET_IPV4_ROUTE,
-	  .child = ipv4_route_table},
+	  .mode = 0555, .child = ipv4_route_table},
 	{ .procname = "neigh", .ctl_name = NET_IPV4_NEIGH,
-	  .child = empty},
+	  .mode = 0555, .child = empty},
 	{ }
 };