diff --git a/cns/singletenantcontroller/conversion.go b/cns/singletenantcontroller/conversion.go
index afab6c034d..413a2d667c 100644
--- a/cns/singletenantcontroller/conversion.go
+++ b/cns/singletenantcontroller/conversion.go
@@ -88,8 +88,7 @@ func CreateNCRequestFromStaticNC(nc v1alpha.NetworkContainer) (*cns.CreateNetwor
 
 	// iterate through all IP addresses in the subnet described by primaryPrefix and
 	// add them to the request as secondary IPConfigs.
-	zeroAddr := primaryPrefix.Masked().Addr() // the masked address is the 0th IP in the subnet
-	for addr := zeroAddr.Next(); primaryPrefix.Contains(addr); addr = addr.Next() {
+	for addr := primaryPrefix.Masked().Addr(); primaryPrefix.Contains(addr); addr = addr.Next() {
 		secondaryIPConfigs[addr.String()] = cns.SecondaryIPConfig{
 			IPAddress: addr.String(),
 			NCVersion: int(nc.Version),
diff --git a/cns/singletenantcontroller/conversion_test.go b/cns/singletenantcontroller/conversion_test.go
index 3df4e0fc98..e6ce30f722 100644
--- a/cns/singletenantcontroller/conversion_test.go
+++ b/cns/singletenantcontroller/conversion_test.go
@@ -94,6 +94,10 @@ var validOverlayRequest = &cns.CreateNetworkContainerRequest{
 	NetworkContainerid:   ncID,
 	NetworkContainerType: cns.Docker,
 	SecondaryIPConfigs: map[string]cns.SecondaryIPConfig{
+		"10.0.0.0": {
+			IPAddress: "10.0.0.0",
+			NCVersion: version,
+		},
 		"10.0.0.1": {
 			IPAddress: "10.0.0.1",
 			NCVersion: version,