Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[safe/jmp/linux-2.6] / net / ipv4 / route.c

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index d62b05d..b16dfad 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1990,8 +1990,13 @@ static int __mkroute_input(struct sk_buff *skb,
        if (skb->protocol != htons(ETH_P_IP)) {
                /* Not IP (i.e. ARP). Do not create route, if it is
                 * invalid for proxy arp. DNAT routes are always valid.
+                *
+                * Proxy arp feature have been extended to allow, ARP
+                * replies back to the same interface, to support
+                * Private VLAN switch technologies. See arp.c.
                 */
-               if (out_dev == in_dev) {
+               if (out_dev == in_dev &&
+                   IN_DEV_PROXY_ARP_PVLAN(in_dev) == 0) {
                        err = -EINVAL;
                        goto cleanup;
                }