diff --git a/.gitignore b/.gitignore
index 3c5e1474c..3744f2783 100644
--- a/.gitignore
+++ b/.gitignore
@@ -55,6 +55,6 @@ experimental/_integration/_integration
 *npm-debug.log
 app/static.go
 prog/static.go
-vendor/github.com/ugorji/go/codec/codecgen/codecgen
+vendor/github.com/ugorji/go/codec/codecgen/bin/*
 *.codecgen.go
 *.generated.go
diff --git a/Makefile b/Makefile
index bd3ec046f..36892fb5f 100644
--- a/Makefile
+++ b/Makefile
@@ -16,17 +16,22 @@ DOCKER_DISTRIB=.pkg/docker-$(DOCKER_VERSION).tgz
 DOCKER_DISTRIB_URL=https://get.docker.com/builds/Linux/x86_64/docker-$(DOCKER_VERSION).tgz
 RUNSVINIT=vendor/runsvinit/runsvinit
 CODECGEN_DIR=vendor/github.com/ugorji/go/codec/codecgen
-CODECGEN_EXE=$(CODECGEN_DIR)/codecgen
+CODECGEN_EXE=$(CODECGEN_DIR)/bin/codecgen_$(shell go env GOHOSTOS)_$(shell go env GOHOSTARCH)
 GET_CODECGEN_DEPS=$(shell find $(1) -maxdepth 1 -type f -name '*.go' -not -name '*_test.go' -not -name '*.codecgen.go' -not -name '*.generated.go')
 CODECGEN_TARGETS=report/report.codecgen.go render/render.codecgen.go render/detailed/detailed.codecgen.go
 RM=--rm
 RUN_FLAGS=-ti
 BUILD_IN_CONTAINER=true
-GO ?= env GO15VENDOREXPERIMENT=1 GOGC=off go
+GO_ENV=GOGC=off
+GO=env $(GO_ENV) go
+NO_CROSS_COMP=unset GOOS GOARCH
+GO_HOST=$(NO_CROSS_COMP); $(GO)
+WITH_GO_HOST_ENV=$(NO_CROSS_COMP); $(GO_ENV)
 GO_BUILD_INSTALL_DEPS=-i
 GO_BUILD_TAGS='netgo unsafe'
 GO_BUILD_FLAGS=$(GO_BUILD_INSTALL_DEPS) -ldflags "-extldflags \"-static\" -X main.version=$(SCOPE_VERSION)" -tags $(GO_BUILD_TAGS)
 
+
 all: $(SCOPE_EXPORT)
 
 $(DOCKER_DISTRIB):
@@ -46,16 +51,15 @@ $(RUNSVINIT): vendor/runsvinit/*.go
 
 $(SCOPE_EXE): $(shell find ./ -path ./vendor -prune -o -type f -name *.go) prog/static.go $(CODECGEN_TARGETS)
 
-report/report.codecgen.go: $(call GET_CODECGEN_DEPS,report/) $(CODECGEN_EXE)
-render/render.codecgen.go: $(call GET_CODECGEN_DEPS,render/) $(CODECGEN_EXE)
-render/detailed/detailed.codecgen.go: $(call GET_CODECGEN_DEPS,render/detailed/) $(CODECGEN_EXE)
-$(CODECGEN_EXE): $(CODECGEN_DIR)/*.go
+report/report.codecgen.go: $(call GET_CODECGEN_DEPS,report/)
+render/render.codecgen.go: $(call GET_CODECGEN_DEPS,render/)
+render/detailed/detailed.codecgen.go: $(call GET_CODECGEN_DEPS,render/detailed/)
 static: prog/static.go
 prog/static.go: client/build/app.js
 
 ifeq ($(BUILD_IN_CONTAINER),true)
 
-$(SCOPE_EXE) $(RUNSVINIT) $(CODECGEN_TARGETS) $(CODECGEN_EXE) lint tests shell prog/static.go: $(SCOPE_BACKEND_BUILD_UPTODATE)
+$(SCOPE_EXE) $(RUNSVINIT) lint tests shell prog/static.go: $(SCOPE_BACKEND_BUILD_UPTODATE)
 	@mkdir -p $(shell pwd)/.pkg
 	$(SUDO) docker run $(RM) $(RUN_FLAGS) \
 		-v $(shell pwd):/go/src/github.com/weaveworks/scope \
@@ -78,12 +82,13 @@ $(SCOPE_EXE): $(SCOPE_BACKEND_BUILD_UPTODATE)
 	        false; \
 	    }
 
-%.codecgen.go: $(SCOPE_BACKEND_BUILD_UPTODATE)
-	rm -f $@ && env -u GOARCH -u GOOS $(GO) build -i -tags $(GO_BUILD_TAGS) ./$(@D) # workaround for https://github.com/ugorji/go/issues/145
-	cd $(@D) && env -u GOARCH -u GOOS GOGC=off $(shell pwd)/$(CODECGEN_EXE) -rt $(GO_BUILD_TAGS) -u -o $(@F) $(notdir $(call GET_CODECGEN_DEPS,$(@D)))
+%.codecgen.go: $(CODECGEN_EXE)
+	rm -f $@; $(GO_HOST) build $(GO_BUILD_FLAGS) ./$(@D) # workaround for https://github.com/ugorji/go/issues/145
+	cd $(@D) && $(WITH_GO_HOST_ENV) $(shell pwd)/$(CODECGEN_EXE) -rt $(GO_BUILD_TAGS) -u -o $(@F) $(notdir $(call GET_CODECGEN_DEPS,$(@D)))
 
-$(CODECGEN_EXE): $(SCOPE_BACKEND_BUILD_UPTODATE)
-	env -u GOARCH -u GOOS $(GO) build -i -tags $(GO_BUILD_TAGS) -o $@ ./$(@D)
+$(CODECGEN_EXE): $(CODECGEN_DIR)/*.go
+	mkdir -p $(@D)
+	$(GO_HOST) build $(GO_BUILD_FLAGS) -o $@ ./$(CODECGEN_DIR)
 
 $(RUNSVINIT): $(SCOPE_BACKEND_BUILD_UPTODATE)
 	time $(GO) build $(GO_BUILD_FLAGS) -o $@ ./$(@D)
@@ -147,7 +152,7 @@ clean:
 	# $(SUDO) docker rmi $(SCOPE_UI_BUILD_IMAGE) $(SCOPE_BACKEND_BUILD_IMAGE) >/dev/null 2>&1 || true
 	rm -rf $(SCOPE_EXPORT) $(SCOPE_UI_BUILD_UPTODATE) $(SCOPE_BACKEND_BUILD_UPTODATE) \
 		$(SCOPE_EXE) $(RUNSVINIT) prog/static.go client/build/app.js docker/weave .pkg \
-		$(CODECGEN_TARGETS) $(CODECGEN_EXE)
+		$(CODECGEN_TARGETS) $(CODECGEN_DIR)/bin
 
 deps:
 	$(GO) get -u -f -tags $(GO_BUILD_TAGS) \
diff --git a/backend/Dockerfile b/backend/Dockerfile
index 85b36ec3b..566bb049e 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,5 +1,4 @@
 FROM golang:1.6.0
-ENV GO15VENDOREXPERIMENT 1
 RUN apt-get update && apt-get install -y libpcap-dev python-requests time
 RUN go clean -i net && go install -tags netgo std &&  go install -race -tags netgo std
 RUN go get -tags netgo \
diff --git a/vendor/github.com/ugorji/go/codec/codecgen/README.md b/vendor/github.com/ugorji/go/codec/codecgen/README.md
index 3ae8a056f..854b64bfc 100644
--- a/vendor/github.com/ugorji/go/codec/codecgen/README.md
+++ b/vendor/github.com/ugorji/go/codec/codecgen/README.md
@@ -23,6 +23,7 @@ Usage of codecgen:
   -c="github.com/ugorji/go/codec": codec path
   -o="": out file
   -r=".*": regex for type name to match
+  -nr="": regex for type name to exclude
   -rt="": tags for go run
   -t="": build tag to put in file
   -u=false: Use unsafe, e.g. to avoid unnecessary allocation on []byte->string
diff --git a/vendor/github.com/ugorji/go/codec/codecgen/gen.go b/vendor/github.com/ugorji/go/codec/codecgen/gen.go
index f370b4c79..d5e214c37 100644
--- a/vendor/github.com/ugorji/go/codec/codecgen/gen.go
+++ b/vendor/github.com/ugorji/go/codec/codecgen/gen.go
@@ -82,7 +82,7 @@ func CodecGenTempWrite{{ .RandString }}() {
 // fout contains Codec(En|De)codeSelf implementations for every type T.
 //
 func Generate(outfile, buildTag, codecPkgPath string, uid int64, useUnsafe bool, goRunTag string,
-	st string, regexName *regexp.Regexp, deleteTempFile bool, infiles ...string) (err error) {
+	st string, regexName *regexp.Regexp, notRegexName *regexp.Regexp, deleteTempFile bool, infiles ...string) (err error) {
 	// For each file, grab AST, find each type, and write a call to it.
 	if len(infiles) == 0 {
 		return
@@ -180,7 +180,7 @@ func Generate(outfile, buildTag, codecPkgPath string, uid int64, useUnsafe bool,
 						//   FuncType, InterfaceType, StarExpr (ptr), etc
 						switch td.Type.(type) {
 						case *ast.StructType, *ast.Ident, *ast.MapType, *ast.ArrayType, *ast.ChanType:
-							if regexName.FindStringIndex(td.Name.Name) != nil {
+							if regexName.FindStringIndex(td.Name.Name) != nil && notRegexName.FindStringIndex(td.Name.Name) == nil {
 								tv.Types = append(tv.Types, td.Name.Name)
 							}
 						}
@@ -259,6 +259,7 @@ func main() {
 	c := flag.String("c", genCodecPath, "codec path")
 	t := flag.String("t", "", "build tag to put in file")
 	r := flag.String("r", ".*", "regex for type name to match")
+	nr := flag.String("nr", "^$", "regex for type name to exclude")
 	rt := flag.String("rt", "", "tags for go run")
 	st := flag.String("st", "codec,json", "struct tag keys to introspect")
 	x := flag.Bool("x", false, "keep temp file")
@@ -266,7 +267,7 @@ func main() {
 	d := flag.Int64("d", 0, "random identifier for use in generated code")
 	flag.Parse()
 	if err := Generate(*o, *t, *c, *d, *u, *rt, *st,
-		regexp.MustCompile(*r), !*x, flag.Args()...); err != nil {
+		regexp.MustCompile(*r), regexp.MustCompile(*nr), !*x, flag.Args()...); err != nil {
 		fmt.Fprintf(os.Stderr, "codecgen error: %v\n", err)
 		os.Exit(1)
 	}
diff --git a/vendor/github.com/ugorji/go/codec/gen.go b/vendor/github.com/ugorji/go/codec/gen.go
index 8544f04f6..ac8cc6ddc 100644
--- a/vendor/github.com/ugorji/go/codec/gen.go
+++ b/vendor/github.com/ugorji/go/codec/gen.go
@@ -12,7 +12,6 @@ import (
 	"io"
 	"io/ioutil"
 	"math/rand"
-	"os"
 	"reflect"
 	"regexp"
 	"sort"
@@ -126,6 +125,7 @@ var (
 	genExpectArrayOrMapErr = errors.New("unexpected type. Expecting array/map/slice")
 	genBase64enc           = base64.NewEncoding("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789__")
 	genQNameRegex          = regexp.MustCompile(`[A-Za-z_.]+`)
+	genCheckVendor         bool
 )
 
 // genRunner holds some state used during a Gen run.
@@ -1626,8 +1626,6 @@ func (x *genV) MethodNamePfx(prefix string, prim bool) string {
 
 }
 
-var genCheckVendor = os.Getenv("GO15VENDOREXPERIMENT") == "1"
-
 // genImportPath returns import path of a non-predeclared named typed, or an empty string otherwise.
 //
 // This handles the misbehaviour that occurs when 1.5-style vendoring is enabled,
@@ -1678,7 +1676,7 @@ func genNonPtr(t reflect.Type) reflect.Type {
 
 func genTitleCaseName(s string) string {
 	switch s {
-	case "interface{}":
+	case "interface{}", "interface {}":
 		return "Intf"
 	default:
 		return strings.ToUpper(s[0:1]) + s[1:]
@@ -1781,7 +1779,7 @@ func (x genInternal) FastpathLen() (l int) {
 
 func genInternalZeroValue(s string) string {
 	switch s {
-	case "interface{}":
+	case "interface{}", "interface {}":
 		return "nil"
 	case "bool":
 		return "false"
diff --git a/vendor/github.com/ugorji/go/codec/gen_15.go b/vendor/github.com/ugorji/go/codec/gen_15.go
new file mode 100644
index 000000000..ab76c3102
--- /dev/null
+++ b/vendor/github.com/ugorji/go/codec/gen_15.go
@@ -0,0 +1,12 @@
+// Copyright (c) 2012-2015 Ugorji Nwoke. All rights reserved.
+// Use of this source code is governed by a MIT license found in the LICENSE file.
+
+// +build go1.5,!go1.6
+
+package codec
+
+import "os"
+
+func init() {
+	genCheckVendor = os.Getenv("GO15VENDOREXPERIMENT") == "1"
+}
diff --git a/vendor/github.com/ugorji/go/codec/gen_16.go b/vendor/github.com/ugorji/go/codec/gen_16.go
new file mode 100644
index 000000000..87c04e2e1
--- /dev/null
+++ b/vendor/github.com/ugorji/go/codec/gen_16.go
@@ -0,0 +1,12 @@
+// Copyright (c) 2012-2015 Ugorji Nwoke. All rights reserved.
+// Use of this source code is governed by a MIT license found in the LICENSE file.
+
+// +build go1.6
+
+package codec
+
+import "os"
+
+func init() {
+	genCheckVendor = os.Getenv("GO15VENDOREXPERIMENT") != "0"
+}
diff --git a/vendor/manifest b/vendor/manifest
index 3313b1bf8..4310a7d89 100644
--- a/vendor/manifest
+++ b/vendor/manifest
@@ -790,7 +790,7 @@
 		{
 			"importpath": "github.com/ugorji/go/codec",
 			"repository": "https://github.com/ugorji/go",
-			"revision": "03b46f3d7a8e0457836a5ecd906b4961a5815a63",
+			"revision": "c062049c1793b01a3cc3fe786108edabbaf7756b",
 			"branch": "master",
 			"path": "/codec"
 		},