From bb4f541bb2cdbdec37df3a31395086b0839ab3fc Mon Sep 17 00:00:00 2001
From: Jian Li <pyguni@gmail.com>
Date: Thu, 12 Apr 2018 09:48:50 +0900
Subject: [PATCH] Fix: resolve NPE by obtaining networkId from subnet instead
 of  port

Change-Id: Ib49a8627e601bc893062069daf6f266fcc8e8460
---
 .../openstacknetworking/impl/OpenstackSwitchingArpHandler.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
index b3340c6494..7e15b2570d 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
@@ -330,7 +330,8 @@ public final class OpenstackSwitchingArpHandler {
                 return false;
             }
 
-            Network network = osNetworkService.network(event.port().getNetworkId());
+            Network network = osNetworkService.network(osSubnet.getNetworkId());
+
             if (network == null) {
                 log.warn("Network is not specified.");
                 return false;