From a86bc44ecc2c029e848ad7490af26c56eafd44aa Mon Sep 17 00:00:00 2001
From: Murali Reddy <murali.reddy@cloudnativelabs.net>
Date: Thu, 27 Jul 2017 23:24:03 +0530
Subject: [PATCH] fix null pointer dereference during kube-router
 --cleanup-config

Fixes #79
---
 app/controllers/network_services_controller.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/app/controllers/network_services_controller.go b/app/controllers/network_services_controller.go
index 52540332..9507d35f 100644
--- a/app/controllers/network_services_controller.go
+++ b/app/controllers/network_services_controller.go
@@ -767,7 +767,14 @@ func getKubeDummyInterface() (netlink.Link, error) {
 func (nsc *NetworkServicesController) Cleanup() {
 	// cleanup ipvs rules by flush
 	glog.Infof("Cleaning up IPVS configuration permanently")
-	err := h.Flush()
+
+	handle, err := libipvs.New()
+	if err != nil {
+		glog.Errorf("Failed to cleanup ipvs rules: ", err.Error())
+		return
+	}
+
+	err = handle.Flush()
 	if err != nil {
 		glog.Errorf("Failed to cleanup ipvs rules: ", err.Error())
 		return