From 2936b6ab455433a5ad14c7a1d2473afe1fa3faa7 Mon Sep 17 00:00:00 2001
From: Sridhar Samudrala <sri@us.ibm.com>
Date: Tue, 17 Sep 2013 12:12:40 -0700
Subject: [PATCH] vxlan: Avoid creating fdb entry with NULL destination

Commit afbd8bae9c798c5cdbe4439d3a50536b5438247c
   vxlan: add implicit fdb entry for default destination
creates an implicit fdb entry for default destination. This results
in an invalid fdb entry if default destination is not specified.
For ex:
  ip link add vxlan1 type vxlan id 100
creates the following fdb entry
  00:00:00:00:00:00 dev vxlan1 dst 0.0.0.0 self permanent

This patch fixes this issue by creating an fdb entry only if a
valid default destination is specified.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
Reading git-format-patch failed