diff --git a/multus/multus_test.go b/multus/multus_test.go
index d98f36c5c..6cdca10b5 100644
--- a/multus/multus_test.go
+++ b/multus/multus_test.go
@@ -28,11 +28,12 @@ import (
 
 	"github.com/containernetworking/cni/pkg/skel"
 	cnitypes "github.com/containernetworking/cni/pkg/types"
-	"github.com/containernetworking/cni/pkg/types/020"
+	types020 "github.com/containernetworking/cni/pkg/types/020"
 	cniversion "github.com/containernetworking/cni/pkg/version"
 	"github.com/containernetworking/plugins/pkg/ns"
 	"github.com/containernetworking/plugins/pkg/testutils"
 
+	"github.com/intel/multus-cni/logging"
 	testhelpers "github.com/intel/multus-cni/testing"
 
 	. "github.com/onsi/ginkgo"
@@ -176,22 +177,24 @@ var _ = Describe("multus operations", func() {
 			Netns:       testNS.Path(),
 			IfName:      "eth0",
 			StdinData: []byte(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "defaultnetworkfile": "/tmp/foo.multus.conf",
-    "defaultnetworkwaitseconds": 3,
-    "delegates": [{
-        "name": "weave1",
-        "cniVersion": "0.2.0",
-        "type": "weave-net"
-    },{
-        "name": "other1",
-        "cniVersion": "0.2.0",
-        "type": "other-plugin"
-    }]
-}`),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "defaultnetworkfile": "/tmp/foo.multus.conf",
+	    "defaultnetworkwaitseconds": 3,
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    },{
+	        "name": "other1",
+	        "cniVersion": "0.2.0",
+	        "type": "other-plugin"
+	    }]
+	}`),
 		}
 
+		logging.SetLogLevel("verbose")
+
 		// Touch the default network file.
 		configPath := "/tmp/foo.multus.conf"
 		os.OpenFile(configPath, os.O_RDONLY|os.O_CREATE, 0755)
@@ -204,10 +207,10 @@ var _ = Describe("multus operations", func() {
 			},
 		}
 		expectedConf1 := `{
-    "name": "weave1",
-    "cniVersion": "0.2.0",
-    "type": "weave-net"
-}`
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
 		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
 
 		expectedResult2 := &types020.Result{
@@ -217,10 +220,10 @@ var _ = Describe("multus operations", func() {
 			},
 		}
 		expectedConf2 := `{
-    "name": "other1",
-    "cniVersion": "0.2.0",
-    "type": "other-plugin"
-}`
+	    "name": "other1",
+	    "cniVersion": "0.2.0",
+	    "type": "other-plugin"
+	}`
 		fExec.addPlugin(nil, "net1", expectedConf2, expectedResult2, nil)
 
 		os.Setenv("CNI_COMMAND", "ADD")
@@ -243,31 +246,267 @@ var _ = Describe("multus operations", func() {
 			errRemove := os.Remove(configPath)
 			Expect(errRemove).NotTo(HaveOccurred())
 		}
+	})
 
+	It("executes delegates given faulty namespace", func() {
+		args := &skel.CmdArgs{
+			ContainerID: "123456789",
+			Netns:       "fsdadfad",
+			IfName:      "eth0",
+			StdinData: []byte(`{
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "defaultnetworkfile": "/tmp/foo.multus.conf",
+	    "defaultnetworkwaitseconds": 3,
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    },{
+	        "name": "other1",
+	        "cniVersion": "0.2.0",
+	        "type": "other-plugin"
+	    }]
+	}`),
+		}
+		// Netns is given garbage value
+
+		// Touch the default network file.
+		configPath := "/tmp/foo.multus.conf"
+		os.OpenFile(configPath, os.O_RDONLY|os.O_CREATE, 0755)
+
+		fExec := &fakeExec{}
+		expectedResult1 := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.2/24"),
+			},
+		}
+		expectedConf1 := `{
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
+		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
+
+		expectedResult2 := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.5/24"),
+			},
+		}
+		expectedConf2 := `{
+	    "name": "other1",
+	    "cniVersion": "0.2.0",
+	    "type": "other-plugin"
+	}`
+		fExec.addPlugin(nil, "net1", expectedConf2, expectedResult2, nil)
+
+		os.Setenv("CNI_COMMAND", "ADD")
+		os.Setenv("CNI_IFNAME", "eth0")
+		result, err := cmdAdd(args, fExec, nil)
+		Expect(err).NotTo(HaveOccurred())
+		Expect(fExec.addIndex).To(Equal(len(fExec.plugins)))
+		r := result.(*types020.Result)
+		// plugin 1 is the masterplugin
+		Expect(reflect.DeepEqual(r, expectedResult1)).To(BeTrue())
+
+		os.Setenv("CNI_COMMAND", "DEL")
+		os.Setenv("CNI_IFNAME", "eth0")
+		err = cmdDel(args, fExec, nil)
+		Expect(err).NotTo(HaveOccurred())
+		Expect(fExec.delIndex).To(Equal(len(fExec.plugins)))
+
+		// Cleanup default network file.
+		if _, errStat := os.Stat(configPath); errStat == nil {
+			errRemove := os.Remove(configPath)
+			Expect(errRemove).NotTo(HaveOccurred())
+		}
+	})
+
+	It("returns the previous result using cmdGet", func() {
+		args := &skel.CmdArgs{
+			ContainerID: "123456789",
+			Netns:       testNS.Path(),
+			IfName:      "eth0",
+			StdinData: []byte(`{
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "defaultnetworkfile": "/tmp/foo.multus.conf",
+	    "defaultnetworkwaitseconds": 3,
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    },{
+	        "name": "other1",
+	        "cniVersion": "0.2.0",
+	        "type": "other-plugin"
+	    }]
+	}`),
+		}
+
+		// Touch the default network file.
+		configPath := "/tmp/foo.multus.conf"
+		os.OpenFile(configPath, os.O_RDONLY|os.O_CREATE, 0755)
+
+		fExec := &fakeExec{}
+		expectedResult1 := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.2/24"),
+			},
+		}
+		expectedConf1 := `{
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
+		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
+
+		expectedResult2 := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.5/24"),
+			},
+		}
+		expectedConf2 := `{
+	    "name": "other1",
+	    "cniVersion": "0.2.0",
+	    "type": "other-plugin"
+	}`
+		fExec.addPlugin(nil, "net1", expectedConf2, expectedResult2, nil)
+
+		os.Setenv("CNI_COMMAND", "ADD")
+		os.Setenv("CNI_IFNAME", "eth0")
+		result, err := cmdAdd(args, fExec, nil)
+		Expect(err).NotTo(HaveOccurred())
+		Expect(fExec.addIndex).To(Equal(len(fExec.plugins)))
+		r := result.(*types020.Result)
+		// plugin 1 is the masterplugin
+		Expect(reflect.DeepEqual(r, expectedResult1)).To(BeTrue())
+
+		result, err = cmdGet(args, fExec, nil)
+		Expect(err).NotTo(HaveOccurred())
+
+		os.Setenv("CNI_COMMAND", "DEL")
+		os.Setenv("CNI_IFNAME", "eth0")
+		err = cmdDel(args, fExec, nil)
+		Expect(err).NotTo(HaveOccurred())
+		Expect(fExec.delIndex).To(Equal(len(fExec.plugins)))
+
+		// Cleanup default network file.
+		if _, errStat := os.Stat(configPath); errStat == nil {
+			errRemove := os.Remove(configPath)
+			Expect(errRemove).NotTo(HaveOccurred())
+		}
+	})
+
+	It("fails to load NetConf with bad json in cmdAdd/Del", func() {
+		args := &skel.CmdArgs{
+			ContainerID: "123456789",
+			Netns:       testNS.Path(),
+			IfName:      "eth0",
+			StdinData: []byte(`{
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "defaultnetworkfile": "/tmp/foo.multus.conf",
+	    "defaultnetworkwaitseconds": 3,
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    },{
+	        "name": "other1",
+	        "cniVersion": "0.2.0",
+	        "type": "other-plugin"
+	    }]
+	`),
+		}
+		// Missing close bracket in StdinData
+
+		// Touch the default network file.
+		configPath := "/tmp/foo.multus.conf"
+		os.OpenFile(configPath, os.O_RDONLY|os.O_CREATE, 0755)
+
+		fExec := &fakeExec{}
+		expectedResult1 := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.2/24"),
+			},
+		}
+		expectedConf1 := `{
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
+		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
+
+		expectedResult2 := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.5/24"),
+			},
+		}
+		expectedConf2 := `{
+	    "name": "other1",
+	    "cniVersion": "0.2.0",
+	    "type": "other-plugin"
+	}`
+		fExec.addPlugin(nil, "net1", expectedConf2, expectedResult2, nil)
+
+		os.Setenv("CNI_COMMAND", "ADD")
+		os.Setenv("CNI_IFNAME", "eth0")
+		_, err := cmdAdd(args, fExec, nil)
+		Expect(err).To(HaveOccurred())
+
+		err = cmdDel(args, fExec, nil)
+		Expect(err).To(HaveOccurred())
+	})
+
+	It("fails to save NetConf with bad filepath", func() {
+		meme := []byte(`meme`)
+		err := saveScratchNetConf("123456789", "", meme)
+		Expect(err).To(HaveOccurred())
+	})
+
+	It("fails to delete delegates with bad filepath", func() {
+		err := deleteDelegates("123456789", "bad!file!~?Path$^")
+		Expect(err).To(HaveOccurred())
+	})
+
+	It("delete delegates given good filepath", func() {
+		os.MkdirAll("/opt/cni/bin", 0755)
+		d1 := []byte("blah")
+		ioutil.WriteFile("/opt/cni/bin/123456789", d1, 0644)
+
+		err := deleteDelegates("123456789", "/opt/cni/bin")
+		Expect(err).NotTo(HaveOccurred())
 	})
 
 	It("executes delegates and cleans up on failure", func() {
 		expectedConf1 := `{
-    "name": "weave1",
-    "cniVersion": "0.2.0",
-    "type": "weave-net"
-}`
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
 		expectedConf2 := `{
-    "name": "other1",
-    "cniVersion": "0.2.0",
-    "type": "other-plugin"
-}`
+	    "name": "other1",
+	    "cniVersion": "0.2.0",
+	    "type": "other-plugin"
+	}`
 		args := &skel.CmdArgs{
 			ContainerID: "123456789",
 			Netns:       testNS.Path(),
 			IfName:      "eth0",
 			StdinData: []byte(fmt.Sprintf(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "defaultnetworkfile": "/tmp/foo.multus.conf",
-    "defaultnetworkwaitseconds": 3,
-    "delegates": [%s,%s]
-}`, expectedConf1, expectedConf2)),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "defaultnetworkfile": "/tmp/foo.multus.conf",
+	    "defaultnetworkwaitseconds": 3,
+	    "delegates": [%s,%s]
+	}`, expectedConf1, expectedConf2)),
 		}
 
 		// Touch the default network file.
@@ -302,40 +541,98 @@ var _ = Describe("multus operations", func() {
 
 	})
 
+	It("executes delegates and cleans up on failure with missing name field", func() {
+		expectedConf1 := `{
+		    "name": "weave1",
+		    "cniVersion": "0.2.0",
+		    "type": "weave-net"
+		}`
+		expectedConf2 := `{
+		    "name": "",
+		    "cniVersion": "0.2.0",
+		    "type": "other-plugin"
+		}`
+		// took out the name in expectedConf2, expecting a new value to be filled in by cmdAdd
+
+		args := &skel.CmdArgs{
+			ContainerID: "123456789",
+			Netns:       testNS.Path(),
+			IfName:      "eth0",
+			StdinData: []byte(fmt.Sprintf(`{
+		    "name": "node-cni-network",
+		    "type": "multus",
+		    "defaultnetworkfile": "/tmp/foo.multus.conf",
+		    "defaultnetworkwaitseconds": 3,
+		    "delegates": [%s,%s]
+		}`, expectedConf1, expectedConf2)),
+		}
+
+		// Touch the default network file.
+		configPath := "/tmp/foo.multus.conf"
+		os.OpenFile(configPath, os.O_RDONLY|os.O_CREATE, 0755)
+
+		fExec := &fakeExec{}
+		expectedResult1 := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.2/24"),
+			},
+		}
+		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
+
+		// This plugin invocation should fail
+		err := fmt.Errorf("expected plugin failure")
+		fExec.addPlugin(nil, "net1", expectedConf2, nil, err)
+
+		os.Setenv("CNI_COMMAND", "ADD")
+		os.Setenv("CNI_IFNAME", "eth0")
+		_, err = cmdAdd(args, fExec, nil)
+		Expect(fExec.addIndex).To(Equal(2))
+		Expect(fExec.delIndex).To(Equal(2))
+		Expect(err).To(HaveOccurred())
+
+		// Cleanup default network file.
+		if _, errStat := os.Stat(configPath); errStat == nil {
+			errRemove := os.Remove(configPath)
+			Expect(errRemove).NotTo(HaveOccurred())
+		}
+
+	})
+
 	It("executes delegates with interface name and MAC and IP addr", func() {
 		podNet := `[{"name":"net1",
-			 "interface": "test1",
-			 "ips":"1.2.3.4/24"},
-		{"name":"net2",
-		 "mac": "c2:11:22:33:44:66",
-		 "ips": "10.0.0.1"}
-]`
+				 "interface": "test1",
+				 "ips":"1.2.3.4/24"},
+			{"name":"net2",
+			 "mac": "c2:11:22:33:44:66",
+			 "ips": "10.0.0.1"}
+	]`
 		fakePod := testhelpers.NewFakePod("testpod", podNet, "")
 		net1 := `{
-	"name": "net1",
-	"type": "mynet",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net1",
+		"type": "mynet",
+		"cniVersion": "0.2.0"
+	}`
 		net2 := `{
-	"name": "net2",
-	"type": "mynet2",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net2",
+		"type": "mynet2",
+		"cniVersion": "0.2.0"
+	}`
 		args := &skel.CmdArgs{
 			ContainerID: "123456789",
 			Netns:       testNS.Path(),
 			IfName:      "eth0",
 			Args:        fmt.Sprintf("K8S_POD_NAME=%s;K8S_POD_NAMESPACE=%s", fakePod.ObjectMeta.Name, fakePod.ObjectMeta.Namespace),
 			StdinData: []byte(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
-    "delegates": [{
-        "name": "weave1",
-        "cniVersion": "0.2.0",
-        "type": "weave-net"
-    }]
-}`),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    }]
+	}`),
 		}
 
 		fExec := &fakeExec{}
@@ -346,10 +643,10 @@ var _ = Describe("multus operations", func() {
 			},
 		}
 		expectedConf1 := `{
-    "name": "weave1",
-    "cniVersion": "0.2.0",
-    "type": "weave-net"
-}`
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
 		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
 		fExec.addPlugin([]string{"CNI_ARGS=IgnoreUnknown=true;IP=1.2.3.4/24"}, "test1", net1, &types020.Result{
 			CNIVersion: "0.2.0",
@@ -384,35 +681,35 @@ var _ = Describe("multus operations", func() {
 	It("executes delegates and kubernetes networks", func() {
 		fakePod := testhelpers.NewFakePod("testpod", "net1,net2", "")
 		net1 := `{
-	"name": "net1",
-	"type": "mynet",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net1",
+		"type": "mynet",
+		"cniVersion": "0.2.0"
+	}`
 		net2 := `{
-	"name": "net2",
-	"type": "mynet2",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net2",
+		"type": "mynet2",
+		"cniVersion": "0.2.0"
+	}`
 		net3 := `{
-	"name": "net3",
-	"type": "mynet3",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net3",
+		"type": "mynet3",
+		"cniVersion": "0.2.0"
+	}`
 		args := &skel.CmdArgs{
 			ContainerID: "123456789",
 			Netns:       testNS.Path(),
 			IfName:      "eth0",
 			Args:        fmt.Sprintf("K8S_POD_NAME=%s;K8S_POD_NAMESPACE=%s", fakePod.ObjectMeta.Name, fakePod.ObjectMeta.Namespace),
 			StdinData: []byte(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
-    "delegates": [{
-        "name": "weave1",
-        "cniVersion": "0.2.0",
-        "type": "weave-net"
-    }]
-}`),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    }]
+	}`),
 		}
 
 		fExec := &fakeExec{}
@@ -423,10 +720,10 @@ var _ = Describe("multus operations", func() {
 			},
 		}
 		expectedConf1 := `{
-    "name": "weave1",
-    "cniVersion": "0.2.0",
-    "type": "weave-net"
-}`
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
 		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
 		fExec.addPlugin(nil, "net1", net1, &types020.Result{
 			CNIVersion: "0.2.0",
@@ -463,25 +760,25 @@ var _ = Describe("multus operations", func() {
 	It("executes kubernetes networks and delete it after pod removal", func() {
 		fakePod := testhelpers.NewFakePod("testpod", "net1", "")
 		net1 := `{
-	"name": "net1",
-	"type": "mynet",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net1",
+		"type": "mynet",
+		"cniVersion": "0.2.0"
+	}`
 		args := &skel.CmdArgs{
 			ContainerID: "123456789",
 			Netns:       testNS.Path(),
 			IfName:      "eth0",
 			Args:        fmt.Sprintf("K8S_POD_NAME=%s;K8S_POD_NAMESPACE=%s", fakePod.ObjectMeta.Name, fakePod.ObjectMeta.Namespace),
 			StdinData: []byte(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
-    "delegates": [{
-        "name": "weave1",
-        "cniVersion": "0.2.0",
-        "type": "weave-net"
-    }]
-}`),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    }]
+	}`),
 		}
 
 		fExec := &fakeExec{}
@@ -492,10 +789,78 @@ var _ = Describe("multus operations", func() {
 			},
 		}
 		expectedConf1 := `{
-    "name": "weave1",
-    "cniVersion": "0.2.0",
-    "type": "weave-net"
-}`
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
+		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
+		fExec.addPlugin(nil, "net1", net1, &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.3/24"),
+			},
+		}, nil)
+
+		fKubeClient := testhelpers.NewFakeKubeClient()
+		fKubeClient.AddPod(fakePod)
+		fKubeClient.AddNetConfig(fakePod.ObjectMeta.Namespace, "net1", net1)
+
+		os.Setenv("CNI_COMMAND", "ADD")
+		os.Setenv("CNI_IFNAME", "eth0")
+		result, err := cmdAdd(args, fExec, fKubeClient)
+		Expect(err).NotTo(HaveOccurred())
+		Expect(fExec.addIndex).To(Equal(len(fExec.plugins)))
+		Expect(fKubeClient.PodCount).To(Equal(2))
+		Expect(fKubeClient.NetCount).To(Equal(1))
+		r := result.(*types020.Result)
+		// plugin 1 is the masterplugin
+		Expect(reflect.DeepEqual(r, expectedResult1)).To(BeTrue())
+
+		os.Setenv("CNI_COMMAND", "DEL")
+		os.Setenv("CNI_IFNAME", "eth0")
+		// set fKubeClient to nil to emulate no pod info
+		fKubeClient.DeletePod(fakePod)
+		err = cmdDel(args, fExec, fKubeClient)
+		Expect(err).NotTo(HaveOccurred())
+		Expect(fExec.delIndex).To(Equal(len(fExec.plugins)))
+	})
+
+	It("executes kubernetes networks and delete it after pod removal", func() {
+		fakePod := testhelpers.NewFakePod("testpod", "net1", "")
+		net1 := `{
+		"name": "net1",
+		"type": "mynet",
+		"cniVersion": "0.2.0"
+	}`
+		args := &skel.CmdArgs{
+			ContainerID: "123456789",
+			Netns:       testNS.Path(),
+			IfName:      "eth0",
+			Args:        fmt.Sprintf("K8S_POD_NAME=%s;K8S_POD_NAMESPACE=%s", fakePod.ObjectMeta.Name, fakePod.ObjectMeta.Namespace),
+			StdinData: []byte(`{
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    }]
+	}`),
+		}
+
+		fExec := &fakeExec{}
+		expectedResult1 := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.2/24"),
+			},
+		}
+		expectedConf1 := `{
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
 		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
 		fExec.addPlugin(nil, "net1", net1, &types020.Result{
 			CNIVersion: "0.2.0",
@@ -534,38 +899,38 @@ var _ = Describe("multus operations", func() {
 			Netns:       testNS.Path(),
 			IfName:      "eth0",
 			StdinData: []byte(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "delegates": [{
-        "cniVersion": "0.3.1",
-        "name": "mynet-confList",
-		"plugins": [
-			{
-				"type": "firstPlugin",
-                "capabilities": {"portMappings": true}
-            }
-		]
-	}],
-	"runtimeConfig": {
-        "portMappings": [
-            {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
-		]
-    }
-}`),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "delegates": [{
+	        "cniVersion": "0.3.1",
+	        "name": "mynet-confList",
+			"plugins": [
+				{
+					"type": "firstPlugin",
+	                "capabilities": {"portMappings": true}
+	            }
+			]
+		}],
+		"runtimeConfig": {
+	        "portMappings": [
+	            {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
+			]
+	    }
+	}`),
 		}
 
 		fExec := &fakeExec{}
 		expectedConf1 := `{
-    "capabilities": {"portMappings": true},
-	"name": "mynet-confList",
-    "cniVersion": "0.3.1",
-    "type": "firstPlugin",
-    "runtimeConfig": {
-	    "portMappings": [
-            {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
-		]
-    }
-}`
+	    "capabilities": {"portMappings": true},
+		"name": "mynet-confList",
+	    "cniVersion": "0.3.1",
+	    "type": "firstPlugin",
+	    "runtimeConfig": {
+		    "portMappings": [
+	            {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
+			]
+	    }
+	}`
 		fExec.addPlugin(nil, "eth0", expectedConf1, nil, nil)
 		os.Setenv("CNI_COMMAND", "ADD")
 		os.Setenv("CNI_IFNAME", "eth0")
@@ -576,10 +941,10 @@ var _ = Describe("multus operations", func() {
 	It("executes clusterNetwork delegate", func() {
 		fakePod := testhelpers.NewFakePod("testpod", "", "kube-system/net1")
 		net1 := `{
-	"name": "net1",
-	"type": "mynet",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net1",
+		"type": "mynet",
+		"cniVersion": "0.2.0"
+	}`
 		expectedResult1 := &types020.Result{
 			CNIVersion: "0.2.0",
 			IP4: &types020.IPConfig{
@@ -592,13 +957,13 @@ var _ = Describe("multus operations", func() {
 			IfName:      "eth0",
 			Args:        fmt.Sprintf("K8S_POD_NAME=%s;K8S_POD_NAMESPACE=%s", fakePod.ObjectMeta.Name, fakePod.ObjectMeta.Namespace),
 			StdinData: []byte(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
-    "defaultNetworks": [],
-    "clusterNetwork": "net1",
-    "delegates": []
-}`),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+	    "defaultNetworks": [],
+	    "clusterNetwork": "net1",
+	    "delegates": []
+	}`),
 		}
 
 		fExec := &fakeExec{}
@@ -632,26 +997,26 @@ var _ = Describe("multus operations", func() {
 
 		fakePod := testhelpers.NewFakePod("testpod", "net1", "")
 		net1 := `{
-	"name": "net1",
-	"type": "mynet",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net1",
+		"type": "mynet",
+		"cniVersion": "0.2.0"
+	}`
 		args := &skel.CmdArgs{
 			ContainerID: "123456789",
 			Netns:       testNS.Path(),
 			IfName:      "eth0",
 			Args:        fmt.Sprintf("K8S_POD_NAME=%s;K8S_POD_NAMESPACE=%s", fakePod.ObjectMeta.Name, fakePod.ObjectMeta.Namespace),
 			StdinData: []byte(fmt.Sprintf(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
-    "cniDir": "%s",
-    "delegates": [{
-        "name": "weave1",
-        "cniVersion": "0.2.0",
-        "type": "weave-net"
-    }]
-}`, tmpCNIDir)),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+	    "cniDir": "%s",
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    }]
+	}`, tmpCNIDir)),
 		}
 
 		fExec := &fakeExec{}
@@ -662,10 +1027,10 @@ var _ = Describe("multus operations", func() {
 			},
 		}
 		expectedConf1 := `{
-    "name": "weave1",
-    "cniVersion": "0.2.0",
-    "type": "weave-net"
-}`
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
 		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
 		fExec.addPlugin(nil, "net1", net1, &types020.Result{
 			CNIVersion: "0.2.0",
@@ -710,26 +1075,26 @@ var _ = Describe("multus operations", func() {
 
 		fakePod := testhelpers.NewFakePod("testpod", "net1", "")
 		net1 := `{
-	"name": "net1",
-	"type": "mynet",
-	"cniVersion": "0.2.0"
-}`
+		"name": "net1",
+		"type": "mynet",
+		"cniVersion": "0.2.0"
+	}`
 		args := &skel.CmdArgs{
 			ContainerID: "123456789",
 			Netns:       testNS.Path(),
 			IfName:      "eth0",
 			Args:        fmt.Sprintf("K8S_POD_NAME=%s;K8S_POD_NAMESPACE=%s", fakePod.ObjectMeta.Name, fakePod.ObjectMeta.Namespace),
 			StdinData: []byte(fmt.Sprintf(`{
-    "name": "node-cni-network",
-    "type": "multus",
-    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
-    "cniDir": "%s",
-    "delegates": [{
-        "name": "weave1",
-        "cniVersion": "0.2.0",
-        "type": "weave-net"
-    }]
-}`, tmpCNIDir)),
+	    "name": "node-cni-network",
+	    "type": "multus",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+	    "cniDir": "%s",
+	    "delegates": [{
+	        "name": "weave1",
+	        "cniVersion": "0.2.0",
+	        "type": "weave-net"
+	    }]
+	}`, tmpCNIDir)),
 		}
 
 		fExec := &fakeExec{}
@@ -740,10 +1105,10 @@ var _ = Describe("multus operations", func() {
 			},
 		}
 		expectedConf1 := `{
-    "name": "weave1",
-    "cniVersion": "0.2.0",
-    "type": "weave-net"
-}`
+	    "name": "weave1",
+	    "cniVersion": "0.2.0",
+	    "type": "weave-net"
+	}`
 		fExec.addPlugin(nil, "eth0", expectedConf1, expectedResult1, nil)
 		fExec.addPlugin(nil, "net1", net1, &types020.Result{
 			CNIVersion: "0.2.0",
diff --git a/testing/testing.go b/testing/testing.go
index 7f0db694e..44b055c60 100644
--- a/testing/testing.go
+++ b/testing/testing.go
@@ -16,14 +16,19 @@
 package testing
 
 import (
+	"encoding/json"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"net"
+	"os"
 	"strings"
 
 	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
+	"github.com/containernetworking/cni/pkg/types"
+	types020 "github.com/containernetworking/cni/pkg/types/020"
 	"github.com/onsi/gomega"
 )
 
@@ -153,3 +158,52 @@ func EnsureCIDR(cidr string) *net.IPNet {
 	net.IP = ip
 	return net
 }
+
+// Implements Result interface
+type Result struct {
+	CNIVersion string             `json:"cniVersion,omitempty"`
+	IP4        *types020.IPConfig `json:"ip4,omitempty"`
+	IP6        *types020.IPConfig `json:"ip6,omitempty"`
+	DNS        types.DNS          `json:"dns,omitempty"`
+}
+
+func (r *Result) Version() string {
+	return r.CNIVersion
+}
+
+func (r *Result) GetAsVersion(version string) (types.Result, error) {
+	for _, supportedVersion := range types020.SupportedVersions {
+		if version == supportedVersion {
+			r.CNIVersion = version
+			return r, nil
+		}
+	}
+	return nil, fmt.Errorf("cannot convert version %q to %s", types020.SupportedVersions, version)
+}
+
+func (r *Result) Print() error {
+	return r.PrintTo(os.Stdout)
+}
+
+func (r *Result) PrintTo(writer io.Writer) error {
+	data, err := json.MarshalIndent(r, "", "    ")
+	if err != nil {
+		return err
+	}
+	_, err = writer.Write(data)
+	return err
+}
+
+// String returns a formatted string in the form of "[IP4: $1,][ IP6: $2,] DNS: $3" where
+// $1 represents the receiver's IPv4, $2 represents the receiver's IPv6 and $3 the
+// receiver's DNS. If $1 or $2 are nil, they won't be present in the returned string.
+func (r *Result) String() string {
+	var str string
+	if r.IP4 != nil {
+		str = fmt.Sprintf("IP4:%+v, ", *r.IP4)
+	}
+	if r.IP6 != nil {
+		str += fmt.Sprintf("IP6:%+v, ", *r.IP6)
+	}
+	return fmt.Sprintf("%sDNS:%+v", str, r.DNS)
+}
diff --git a/types/conf.go b/types/conf.go
index 7d8ce8e09..88c95a4a3 100644
--- a/types/conf.go
+++ b/types/conf.go
@@ -45,6 +45,7 @@ func LoadDelegateNetConfList(bytes []byte, delegateConf *DelegateNetConf) error
 	if delegateConf.ConfList.Plugins == nil {
 		return logging.Errorf("delegate must have the 'type'or 'Plugin' field")
 	}
+
 	if delegateConf.ConfList.Plugins[0].Type == "" {
 		return logging.Errorf("a plugin delegate must have the 'type' field")
 	}
@@ -129,7 +130,6 @@ func CreateCNIRuntimeConf(args *skel.CmdArgs, k8sArgs *K8sArgs, ifName string, r
 // LoadNetworkStatus create network status from CNI result
 func LoadNetworkStatus(r types.Result, netName string, defaultNet bool) (*NetworkStatus, error) {
 	logging.Debugf("LoadNetworkStatus: %v, %s, %t", r, netName, defaultNet)
-
 	netstatus := &NetworkStatus{}
 	netstatus.Name = netName
 	netstatus.Default = defaultNet
@@ -138,9 +138,8 @@ func LoadNetworkStatus(r types.Result, netName string, defaultNet bool) (*Networ
 	result, err := current.NewResultFromResult(r)
 	if err != nil {
 		logging.Errorf("error convert the type.Result to current.Result: %v", err)
-		return netstatus, nil
+		return netstatus, err
 	}
-
 	for _, ifs := range result.Interfaces {
 		//Only pod interfaces can have sandbox information
 		if ifs.Sandbox != "" {
diff --git a/types/conf_test.go b/types/conf_test.go
index c693cea44..7db2ce878 100644
--- a/types/conf_test.go
+++ b/types/conf_test.go
@@ -17,8 +17,17 @@ package types
 
 import (
 	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
 	"testing"
 
+	"github.com/containernetworking/cni/pkg/skel"
+	types020 "github.com/containernetworking/cni/pkg/types/020"
+	"github.com/containernetworking/plugins/pkg/ns"
+	"github.com/containernetworking/plugins/pkg/testutils"
+	testhelpers "github.com/intel/multus-cni/testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 )
@@ -29,6 +38,29 @@ func TestConf(t *testing.T) {
 }
 
 var _ = Describe("config operations", func() {
+	var testNS ns.NetNS
+	var tmpDir string
+
+	BeforeEach(func() {
+		// Create a new NetNS so we don't modify the host
+		var err error
+		testNS, err = testutils.NewNS()
+		Expect(err).NotTo(HaveOccurred())
+		os.Setenv("CNI_NETNS", testNS.Path())
+		os.Setenv("CNI_PATH", "/some/path")
+
+		tmpDir, err = ioutil.TempDir("", "multus_tmp")
+		Expect(err).NotTo(HaveOccurred())
+	})
+
+	AfterEach(func() {
+		Expect(testNS.Close()).To(Succeed())
+		os.Unsetenv("CNI_PATH")
+		os.Unsetenv("CNI_ARGS")
+		err := os.RemoveAll(tmpDir)
+		Expect(err).NotTo(HaveOccurred())
+	})
+
 	It("parses a valid multus configuration", func() {
 		conf := `{
     "name": "node-cni-network",
@@ -52,7 +84,7 @@ var _ = Describe("config operations", func() {
 		Expect(len(netConf.RuntimeConfig.PortMaps)).To(Equal(1))
 	})
 
-	It("fails to load invalid multus configuration", func() {
+	It("fails to load invalid multus configuration (bad json)", func() {
 		conf := `{
 	  "name": "node-cni-network",
 	  "type": "multus",
@@ -65,9 +97,68 @@ var _ = Describe("config operations", func() {
 	      {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
 	    ]
 		}`
-		// missing end bracket
+		// Error in conf json: missing end bracket
+
 		_, err := LoadNetConf([]byte(conf))
 		Expect(err).To(HaveOccurred())
+		_, err = LoadDelegateNetConf([]byte(conf), nil, "")
+		Expect(err).To(HaveOccurred())
+		err = LoadDelegateNetConfList([]byte(conf), &DelegateNetConf{})
+		Expect(err).To(HaveOccurred())
+		_, err = addDeviceIDInConfList([]byte(conf), "")
+		Expect(err).To(HaveOccurred())
+		_, err = delegateAddDeviceID([]byte(conf), "")
+		Expect(err).To(HaveOccurred())
+	})
+
+	It("checks if logFile and logLevel are set correctly", func() {
+		conf := `{
+	    "name": "node-cni-network",
+			"type": "multus",
+			"logLevel": "debug",
+			"logFile": "/var/log/multus.log",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+	    "delegates": [{
+	        "type": "weave-net"
+	    }],
+		"runtimeConfig": {
+	      "portMappings": [
+	        {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
+	      ]
+	    }
+
+	}`
+		netConf, err := LoadNetConf([]byte(conf))
+		Expect(err).NotTo(HaveOccurred())
+		Expect(netConf.LogLevel).To(Equal("debug"))
+		Expect(netConf.LogFile).To(Equal("/var/log/multus.log"))
+	})
+
+	It("prevResult with no errors", func() {
+		conf := `{
+	    "name": "node-cni-network",
+			"type": "multus",
+	    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+			"prevResult": {
+				"ips": [
+					{
+						"version": "4",
+						"address": "10.0.0.5/32",
+						"interface": 2
+					}
+			]},
+			"delegates": [{
+	        "type": "weave-net"
+			}],
+		"runtimeConfig": {
+	      "portMappings": [
+	        {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
+	      ]
+	    }
+
+	}`
+		_, err := LoadNetConf([]byte(conf))
+		Expect(err).NotTo(HaveOccurred())
 	})
 
 	It("succeeds if only delegates are set", func() {
@@ -108,6 +199,33 @@ var _ = Describe("config operations", func() {
 		Expect(err).To(HaveOccurred())
 	})
 
+	It("fails when delegate field exists but fields are named incorrectly", func() {
+		conf := `{
+	"name": "node-cni-network",
+		"type": "multus",
+    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+		"prevResult": {
+			"ips": [
+				{
+					"version": "4",
+					"address": "10.0.0.5/32",
+					"interface": 2
+				}
+			]
+		},
+		"delegates": [{
+			"thejohn": "weave-net"
+		}],
+	"runtimeConfig": {
+		"portMappings": [
+			{"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
+	    ]
+	}
+}`
+		_, err := LoadNetConf([]byte(conf))
+		Expect(err).To(HaveOccurred())
+	})
+
 	It("has defaults set for network readiness", func() {
 		conf := `{
     "name": "defaultnetwork",
@@ -240,4 +358,162 @@ var _ = Describe("config operations", func() {
 		Expect(hostDeviceConfList.Plugins[0].PCIBusID).To(Equal("0000:00:00.3"))
 	})
 
+	It("creates a valid CNI runtime config", func() {
+		args := &skel.CmdArgs{
+			ContainerID: "123456789",
+			Netns:       testNS.Path(),
+			IfName:      "eth0",
+			StdinData: []byte(`{
+    "name": "node-cni-network",
+    "type": "multus",
+    "defaultnetworkfile": "/tmp/foo.multus.conf",
+    "defaultnetworkwaitseconds": 3,
+    "delegates": [{
+        "name": "weave1",
+        "cniVersion": "0.2.0",
+        "type": "weave-net"
+    },{
+        "name": "other1",
+        "cniVersion": "0.2.0",
+        "type": "other-plugin"
+    }]
+}`),
+		}
+
+		k8sArgs := &K8sArgs{K8S_POD_NAME: "dummy", K8S_POD_NAMESPACE: "namespacedummy", K8S_POD_INFRA_CONTAINER_ID: "123456789"}
+
+		rc := &RuntimeConfig{}
+		tempportmap := make([]PortMapEntry, 2)
+		rc.PortMaps = tempportmap
+
+		rc.PortMaps[0].HostPort = 0
+		rc.PortMaps[0].ContainerPort = 1
+		rc.PortMaps[0].Protocol = "sampleProtocol"
+		rc.PortMaps[0].HostIP = "sampleHostIP"
+		rc.PortMaps[1].HostPort = 1
+		rc.PortMaps[1].ContainerPort = 2
+		rc.PortMaps[1].Protocol = "anotherSampleProtocol"
+		rc.PortMaps[1].HostIP = "anotherSampleHostIP"
+
+		rt := CreateCNIRuntimeConf(args, k8sArgs, "", rc)
+		fmt.Println("rt.ContainerID: ", rt.ContainerID)
+		Expect(rt.ContainerID).To(Equal("123456789"))
+		Expect(rt.NetNS).To(Equal(args.Netns))
+		Expect(rt.IfName).To(Equal(""))
+		Expect(rt.CapabilityArgs["portMappings"]).To(Equal(rc.PortMaps))
+	})
+
+	It("can loadnetworkstatus", func() {
+		result := &types020.Result{
+			CNIVersion: "0.2.0",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.2/24"),
+			},
+		}
+
+		conf := `{
+    "name": "node-cni-network",
+    "type": "multus",
+    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+    "delegates": [{
+        "type": "weave-net"
+    }],
+  "runtimeConfig": {
+      "portMappings": [
+        {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
+      ]
+    }
+}`
+
+		delegate, err := LoadDelegateNetConf([]byte(conf), nil, "0000:00:00.0")
+		Expect(err).NotTo(HaveOccurred())
+
+		delegateNetStatus, err := LoadNetworkStatus(result, delegate.Conf.Name, delegate.MasterPlugin)
+
+		GinkgoT().Logf("delegateNetStatus %+v\n", delegateNetStatus)
+
+		Expect(err).NotTo(HaveOccurred())
+	})
+
+	It("cannot loadnetworkstatus given incompatible CNIVersion", func() {
+
+		result := &testhelpers.Result{
+			CNIVersion: "1.2.3",
+			IP4: &types020.IPConfig{
+				IP: *testhelpers.EnsureCIDR("1.1.1.2/24"),
+			},
+		}
+
+		conf := `{
+    "name": "node-cni-network",
+    "type": "multus",
+    "kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
+    "delegates": [{
+        "type": "weave-net"
+    }],
+  "runtimeConfig": {
+      "portMappings": [
+        {"hostPort": 8080, "containerPort": 80, "protocol": "tcp"}
+      ]
+    }
+}`
+
+		delegate, err := LoadDelegateNetConf([]byte(conf), nil, "0000:00:00.0")
+		Expect(err).NotTo(HaveOccurred())
+		fmt.Println("result.Version: ", result.Version())
+		delegateNetStatus, err := LoadNetworkStatus(result, delegate.Conf.Name, delegate.MasterPlugin)
+
+		GinkgoT().Logf("delegateNetStatus %+v\n", delegateNetStatus)
+
+		Expect(err).To(HaveOccurred())
+	})
+
 })
+
+// type Result struct {
+// 	CNIVersion string             `json:"cniVersion,omitempty"`
+// 	IP4        *types020.IPConfig `json:"ip4,omitempty"`
+// 	IP6        *types020.IPConfig `json:"ip6,omitempty"`
+// 	DNS        types.DNS          `json:"dns,omitempty"`
+// }
+
+// func (r *Result) Version() string {
+// 	return r.CNIVersion
+// }
+
+// func (r *Result) GetAsVersion(version string) (types.Result, error) {
+// 	for _, supportedVersion := range types020.SupportedVersions {
+// 		if version == supportedVersion {
+// 			r.CNIVersion = version
+// 			return r, nil
+// 		}
+// 	}
+// 	return nil, fmt.Errorf("cannot convert version %q to %s", types020.SupportedVersions, version)
+// }
+
+// func (r *Result) Print() error {
+// 	return r.PrintTo(os.Stdout)
+// }
+
+// func (r *Result) PrintTo(writer io.Writer) error {
+// 	data, err := json.MarshalIndent(r, "", "    ")
+// 	if err != nil {
+// 		return err
+// 	}
+// 	_, err = writer.Write(data)
+// 	return err
+// }
+
+// // String returns a formatted string in the form of "[IP4: $1,][ IP6: $2,] DNS: $3" where
+// // $1 represents the receiver's IPv4, $2 represents the receiver's IPv6 and $3 the
+// // receiver's DNS. If $1 or $2 are nil, they won't be present in the returned string.
+// func (r *Result) String() string {
+// 	var str string
+// 	if r.IP4 != nil {
+// 		str = fmt.Sprintf("IP4:%+v, ", *r.IP4)
+// 	}
+// 	if r.IP6 != nil {
+// 		str += fmt.Sprintf("IP6:%+v, ", *r.IP6)
+// 	}
+// 	return fmt.Sprintf("%sDNS:%+v", str, r.DNS)
+// }