vendor: update golang_org/x/net/route package

Update the route package to git rev 6b27048a.

Introduce the following changes:
 - 6b27048 route: drop support for go1.5
 - b7fd658 route: fix typo
 - 41bba8d route: add support for the manipulation of routing informaion

Updates #19967

Change-Id: Id2bb93df97a45254a2df2b048db0143e3e52bbdf
Reviewed-on: https://go-review.googlesource.com/40830
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

27 files changed, 602 insertions, 125 deletions

diff --git a/src/vendor/golang_org/x/net/route/address.go b/src/vendor/golang_org/x/net/route/address.go
index a56909c105..e6bfa39e93 100644
--- a/src/vendor/golang_org/x/net/route/address.go
+++ b/src/vendor/golang_org/x/net/route/address.go
@@ -24,6 +24,39 @@ type LinkAddr struct {
 // Family implements the Family method of Addr interface.
 func (a *LinkAddr) Family() int { return sysAF_LINK }
 
+func (a *LinkAddr) lenAndSpace() (int, int) {
+	l := 8 + len(a.Name) + len(a.Addr)
+	return l, roundup(l)
+}
+
+func (a *LinkAddr) marshal(b []byte) (int, error) {
+	l, ll := a.lenAndSpace()
+	if len(b) < ll {
+		return 0, errShortBuffer
+	}
+	nlen, alen := len(a.Name), len(a.Addr)
+	if nlen > 255 || alen > 255 {
+		return 0, errInvalidAddr
+	}
+	b[0] = byte(l)
+	b[1] = sysAF_LINK
+	if a.Index > 0 {
+		nativeEndian.PutUint16(b[2:4], uint16(a.Index))
+	}
+	data := b[8:]
+	if nlen > 0 {
+		b[5] = byte(nlen)
+		copy(data[:nlen], a.Addr)
+		data = data[nlen:]
+	}
+	if alen > 0 {
+		b[6] = byte(alen)
+		copy(data[:alen], a.Name)
+		data = data[alen:]
+	}
+	return ll, nil
+}
+
 func parseLinkAddr(b []byte) (Addr, error) {
 	if len(b) < 8 {
 		return nil, errInvalidAddr
@@ -90,6 +123,21 @@ type Inet4Addr struct {
 // Family implements the Family method of Addr interface.
 func (a *Inet4Addr) Family() int { return sysAF_INET }
 
+func (a *Inet4Addr) lenAndSpace() (int, int) {
+	return sizeofSockaddrInet, roundup(sizeofSockaddrInet)
+}
+
+func (a *Inet4Addr) marshal(b []byte) (int, error) {
+	l, ll := a.lenAndSpace()
+	if len(b) < ll {
+		return 0, errShortBuffer
+	}
+	b[0] = byte(l)
+	b[1] = sysAF_INET
+	copy(b[4:8], a.IP[:])
+	return ll, nil
+}
+
 // An Inet6Addr represents an internet address for IPv6.
 type Inet6Addr struct {
 	IP     [16]byte // IP address
@@ -99,18 +147,36 @@ type Inet6Addr struct {
 // Family implements the Family method of Addr interface.
 func (a *Inet6Addr) Family() int { return sysAF_INET6 }
 
+func (a *Inet6Addr) lenAndSpace() (int, int) {
+	return sizeofSockaddrInet6, roundup(sizeofSockaddrInet6)
+}
+
+func (a *Inet6Addr) marshal(b []byte) (int, error) {
+	l, ll := a.lenAndSpace()
+	if len(b) < ll {
+		return 0, errShortBuffer
+	}
+	b[0] = byte(l)
+	b[1] = sysAF_INET6
+	copy(b[8:24], a.IP[:])
+	if a.ZoneID > 0 {
+		nativeEndian.PutUint32(b[24:28], uint32(a.ZoneID))
+	}
+	return ll, nil
+}
+
 // parseInetAddr parses b as an internet address for IPv4 or IPv6.
 func parseInetAddr(af int, b []byte) (Addr, error) {
 	switch af {
 	case sysAF_INET:
-		if len(b) < 16 {
+		if len(b) < sizeofSockaddrInet {
 			return nil, errInvalidAddr
 		}
 		a := &Inet4Addr{}
 		copy(a.IP[:], b[4:8])
 		return a, nil
 	case sysAF_INET6:
-		if len(b) < 28 {
+		if len(b) < sizeofSockaddrInet6 {
 			return nil, errInvalidAddr
 		}
 		a := &Inet6Addr{ZoneID: int(nativeEndian.Uint32(b[24:28]))}
@@ -174,7 +240,7 @@ func parseKernelInetAddr(af int, b []byte) (int, Addr, error) {
 		off6 = 8 // offset of in6_addr
 	)
 	switch {
-	case b[0] == 28: // size of sockaddr_in6
+	case b[0] == sizeofSockaddrInet6:
 		a := &Inet6Addr{}
 		copy(a.IP[:], b[off6:off6+16])
 		return int(b[0]), a, nil
@@ -186,7 +252,7 @@ func parseKernelInetAddr(af int, b []byte) (int, Addr, error) {
 			copy(a.IP[:], b[l-off6:l])
 		}
 		return int(b[0]), a, nil
-	case b[0] == 16: // size of sockaddr_in
+	case b[0] == sizeofSockaddrInet:
 		a := &Inet4Addr{}
 		copy(a.IP[:], b[off4:off4+4])
 		return int(b[0]), a, nil
@@ -211,6 +277,24 @@ type DefaultAddr struct {
 // Family implements the Family method of Addr interface.
 func (a *DefaultAddr) Family() int { return a.af }
 
+func (a *DefaultAddr) lenAndSpace() (int, int) {
+	l := len(a.Raw)
+	return l, roundup(l)
+}
+
+func (a *DefaultAddr) marshal(b []byte) (int, error) {
+	l, ll := a.lenAndSpace()
+	if len(b) < ll {
+		return 0, errShortBuffer
+	}
+	if l > 255 {
+		return 0, errInvalidAddr
+	}
+	b[1] = byte(l)
+	copy(b[:l], a.Raw)
+	return ll, nil
+}
+
 func parseDefaultAddr(b []byte) (Addr, error) {
 	if len(b) < 2 || len(b) < int(b[0]) {
 		return nil, errInvalidAddr
@@ -219,6 +303,66 @@ func parseDefaultAddr(b []byte) (Addr, error) {
 	return a, nil
 }
 
+func addrsSpace(as []Addr) int {
+	var l int
+	for _, a := range as {
+		switch a := a.(type) {
+		case *LinkAddr:
+			_, ll := a.lenAndSpace()
+			l += ll
+		case *Inet4Addr:
+			_, ll := a.lenAndSpace()
+			l += ll
+		case *Inet6Addr:
+			_, ll := a.lenAndSpace()
+			l += ll
+		case *DefaultAddr:
+			_, ll := a.lenAndSpace()
+			l += ll
+		}
+	}
+	return l
+}
+
+// marshalAddrs marshals as and returns a bitmap indicating which
+// address is stored in b.
+func marshalAddrs(b []byte, as []Addr) (uint, error) {
+	var attrs uint
+	for i, a := range as {
+		switch a := a.(type) {
+		case *LinkAddr:
+			l, err := a.marshal(b)
+			if err != nil {
+				return 0, err
+			}
+			b = b[l:]
+			attrs |= 1 << uint(i)
+		case *Inet4Addr:
+			l, err := a.marshal(b)
+			if err != nil {
+				return 0, err
+			}
+			b = b[l:]
+			attrs |= 1 << uint(i)
+		case *Inet6Addr:
+			l, err := a.marshal(b)
+			if err != nil {
+				return 0, err
+			}
+			b = b[l:]
+			attrs |= 1 << uint(i)
+		case *DefaultAddr:
+			l, err := a.marshal(b)
+			if err != nil {
+				return 0, err
+			}
+			b = b[l:]
+			attrs |= 1 << uint(i)
+		}
+	}
+	return attrs, nil
+}
+
 func parseAddrs(attrs uint, fn func(int, []byte) (int, Addr, error), b []byte) ([]Addr, error) {
 	var as [sysRTAX_MAX]Addr
 	af := int(sysAF_UNSPEC)
diff --git a/src/vendor/golang_org/x/net/route/binary.go b/src/vendor/golang_org/x/net/route/binary.go
index 4c561631b9..6910520eca 100644
--- a/src/vendor/golang_org/x/net/route/binary.go
+++ b/src/vendor/golang_org/x/net/route/binary.go
@@ -9,7 +9,7 @@ package route
 // This file contains duplicates of encoding/binary package.
 //
 // This package is supposed to be used by the net package of standard
-// library. Therefore a package set used in the package must be the
+// library. Therefore the package set used in the package must be the
 // same as net package.
 
 var (
diff --git a/src/vendor/golang_org/x/net/route/defs_darwin.go b/src/vendor/golang_org/x/net/route/defs_darwin.go
index f452ad14ce..e7716442d2 100644
--- a/src/vendor/golang_org/x/net/route/defs_darwin.go
+++ b/src/vendor/golang_org/x/net/route/defs_darwin.go
@@ -13,6 +13,8 @@ package route
 #include <net/if.h>
 #include <net/if_dl.h>
 #include <net/route.h>
+
+#include <netinet/in.h>
 */
 import "C"
 
@@ -23,6 +25,8 @@ const (
 	sysAF_LINK   = C.AF_LINK
 	sysAF_INET6  = C.AF_INET6
 
+	sysSOCK_RAW = C.SOCK_RAW
+
 	sysNET_RT_DUMP    = C.NET_RT_DUMP
 	sysNET_RT_FLAGS   = C.NET_RT_FLAGS
 	sysNET_RT_IFLIST  = C.NET_RT_IFLIST
@@ -103,4 +107,8 @@ const (
 	sizeofRtMsghdrDarwin15  = C.sizeof_struct_rt_msghdr
 	sizeofRtMsghdr2Darwin15 = C.sizeof_struct_rt_msghdr2
 	sizeofRtMetricsDarwin15 = C.sizeof_struct_rt_metrics
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
 )
diff --git a/src/vendor/golang_org/x/net/route/defs_dragonfly.go b/src/vendor/golang_org/x/net/route/defs_dragonfly.go
index c737751d76..dd31de269a 100644
--- a/src/vendor/golang_org/x/net/route/defs_dragonfly.go
+++ b/src/vendor/golang_org/x/net/route/defs_dragonfly.go
@@ -13,6 +13,8 @@ package route
 #include <net/if.h>
 #include <net/if_dl.h>
 #include <net/route.h>
+
+#include <netinet/in.h>
 */
 import "C"
 
@@ -23,6 +25,8 @@ const (
 	sysAF_LINK   = C.AF_LINK
 	sysAF_INET6  = C.AF_INET6
 
+	sysSOCK_RAW = C.SOCK_RAW
+
 	sysNET_RT_DUMP   = C.NET_RT_DUMP
 	sysNET_RT_FLAGS  = C.NET_RT_FLAGS
 	sysNET_RT_IFLIST = C.NET_RT_IFLIST
@@ -102,4 +106,8 @@ const (
 
 	sizeofRtMsghdrDragonFlyBSD4  = C.sizeof_struct_rt_msghdr
 	sizeofRtMetricsDragonFlyBSD4 = C.sizeof_struct_rt_metrics
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
 )
diff --git a/src/vendor/golang_org/x/net/route/defs_freebsd.go b/src/vendor/golang_org/x/net/route/defs_freebsd.go
index 8f834e81db..d95594d8ea 100644
--- a/src/vendor/golang_org/x/net/route/defs_freebsd.go
+++ b/src/vendor/golang_org/x/net/route/defs_freebsd.go
@@ -14,6 +14,8 @@ package route
 #include <net/if_dl.h>
 #include <net/route.h>
 
+#include <netinet/in.h>
+
 struct if_data_freebsd7 {
 	u_char ifi_type;
 	u_char ifi_physical;
@@ -222,6 +224,8 @@ const (
 	sysAF_LINK   = C.AF_LINK
 	sysAF_INET6  = C.AF_INET6
 
+	sysSOCK_RAW = C.SOCK_RAW
+
 	sysNET_RT_DUMP     = C.NET_RT_DUMP
 	sysNET_RT_FLAGS    = C.NET_RT_FLAGS
 	sysNET_RT_IFLIST   = C.NET_RT_IFLIST
@@ -326,4 +330,8 @@ const (
 	sizeofIfDataFreeBSD9Emu  = C.sizeof_struct_if_data_freebsd9
 	sizeofIfDataFreeBSD10Emu = C.sizeof_struct_if_data_freebsd10
 	sizeofIfDataFreeBSD11Emu = C.sizeof_struct_if_data_freebsd11
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
 )
diff --git a/src/vendor/golang_org/x/net/route/defs_netbsd.go b/src/vendor/golang_org/x/net/route/defs_netbsd.go
index b18d85e016..b0abd549a0 100644
--- a/src/vendor/golang_org/x/net/route/defs_netbsd.go
+++ b/src/vendor/golang_org/x/net/route/defs_netbsd.go
@@ -13,6 +13,8 @@ package route
 #include <net/if.h>
 #include <net/if_dl.h>
 #include <net/route.h>
+
+#include <netinet/in.h>
 */
 import "C"
 
@@ -23,6 +25,8 @@ const (
 	sysAF_LINK   = C.AF_LINK
 	sysAF_INET6  = C.AF_INET6
 
+	sysSOCK_RAW = C.SOCK_RAW
+
 	sysNET_RT_DUMP   = C.NET_RT_DUMP
 	sysNET_RT_FLAGS  = C.NET_RT_FLAGS
 	sysNET_RT_IFLIST = C.NET_RT_IFLIST
@@ -101,4 +105,8 @@ const (
 
 	sizeofRtMsghdrNetBSD7  = C.sizeof_struct_rt_msghdr
 	sizeofRtMetricsNetBSD7 = C.sizeof_struct_rt_metrics
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
 )
diff --git a/src/vendor/golang_org/x/net/route/defs_openbsd.go b/src/vendor/golang_org/x/net/route/defs_openbsd.go
index 5df7a43bc3..0f66d3619c 100644
--- a/src/vendor/golang_org/x/net/route/defs_openbsd.go
+++ b/src/vendor/golang_org/x/net/route/defs_openbsd.go
@@ -13,6 +13,8 @@ package route
 #include <net/if.h>
 #include <net/if_dl.h>
 #include <net/route.h>
+
+#include <netinet/in.h>
 */
 import "C"
 
@@ -23,6 +25,8 @@ const (
 	sysAF_LINK   = C.AF_LINK
 	sysAF_INET6  = C.AF_INET6
 
+	sysSOCK_RAW = C.SOCK_RAW
+
 	sysNET_RT_DUMP    = C.NET_RT_DUMP
 	sysNET_RT_FLAGS   = C.NET_RT_FLAGS
 	sysNET_RT_IFLIST  = C.NET_RT_IFLIST
@@ -91,3 +95,11 @@ const (
 	sysRTAX_LABEL   = C.RTAX_LABEL
 	sysRTAX_MAX     = C.RTAX_MAX
 )
+
+const (
+	sizeofRtMsghdr = C.sizeof_struct_rt_msghdr
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
+)
diff --git a/src/vendor/golang_org/x/net/route/message.go b/src/vendor/golang_org/x/net/route/message.go
index d7ae0eb50f..0fa7e09f46 100644
--- a/src/vendor/golang_org/x/net/route/message.go
+++ b/src/vendor/golang_org/x/net/route/message.go
@@ -7,9 +7,6 @@
 package route
 
 // A Message represents a routing message.
-//
-// Note: This interface will be changed to support Marshal method in
-// future version.
 type Message interface {
 	// Sys returns operating system-specific information.
 	Sys() []Sys
@@ -52,11 +49,10 @@ func ParseRIB(typ RIBType, b []byte) ([]Message, error) {
 			b = b[l:]
 			continue
 		}
-		mtyp := int(b[3])
-		if fn, ok := parseFns[mtyp]; !ok {
+		if w, ok := wireFormats[int(b[3])]; !ok {
 			nskips++
 		} else {
-			m, err := fn(typ, b)
+			m, err := w.parse(typ, b)
 			if err != nil {
 				return nil, err
 			}
diff --git a/src/vendor/golang_org/x/net/route/message_test.go b/src/vendor/golang_org/x/net/route/message_test.go
index c0c7c57a9a..b3bc60c626 100644
--- a/src/vendor/golang_org/x/net/route/message_test.go
+++ b/src/vendor/golang_org/x/net/route/message_test.go
@@ -33,11 +33,28 @@ func TestFetchAndParseRIB(t *testing.T) {
 	}
 }
 
+var (
+	rtmonSock int
+	rtmonErr  error
+)
+
+func init() {
+	// We need to keep rtmonSock alive to avoid treading on
+	// recycled socket descriptors.
+	rtmonSock, rtmonErr = syscall.Socket(sysAF_ROUTE, sysSOCK_RAW, sysAF_UNSPEC)
+}
+
+// TestMonitorAndParseRIB leaks a worker goroutine and a socket
+// descriptor but that's intentional.
 func TestMonitorAndParseRIB(t *testing.T) {
 	if testing.Short() || os.Getuid() != 0 {
 		t.Skip("must be root")
 	}
 
+	if rtmonErr != nil {
+		t.Fatal(rtmonErr)
+	}
+
 	// We suppose that using an IPv4 link-local address and the
 	// dot1Q ID for Token Ring and FDDI doesn't harm anyone.
 	pv := &propVirtual{addr: "169.254.0.1", mask: "255.255.255.0"}
@@ -49,16 +66,18 @@ func TestMonitorAndParseRIB(t *testing.T) {
 	}
 	pv.teardown()
 
-	s, err := syscall.Socket(syscall.AF_ROUTE, syscall.SOCK_RAW, syscall.AF_UNSPEC)
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer syscall.Close(s)
-
 	go func() {
 		b := make([]byte, os.Getpagesize())
 		for {
-			n, err := syscall.Read(s, b)
+			// There's no easy way to unblock this read
+			// call because the routing message exchange
+			// over routing socket is a connectionless
+			// message-oriented protocol, no control plane
+			// for signaling connectivity, and we cannot
+			// use the net package of standard library due
+			// to the lack of support for routing socket
+			// and circular dependency.
+			n, err := syscall.Read(rtmonSock, b)
 			if err != nil {
 				return
 			}
@@ -116,3 +135,99 @@ func TestParseRIBWithFuzz(t *testing.T) {
 		}
 	}
 }
+
+func TestRouteMessage(t *testing.T) {
+	s, err := syscall.Socket(sysAF_ROUTE, sysSOCK_RAW, sysAF_UNSPEC)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer syscall.Close(s)
+
+	var ms []RouteMessage
+	for _, af := range []int{sysAF_INET, sysAF_INET6} {
+		rs, err := fetchAndParseRIB(af, sysNET_RT_DUMP)
+		if err != nil || len(rs) == 0 {
+			continue
+		}
+		switch af {
+		case sysAF_INET:
+			ms = append(ms, []RouteMessage{
+				{
+					Type: sysRTM_GET,
+					Addrs: []Addr{
+						&Inet4Addr{IP: [4]byte{127, 0, 0, 1}},
+						nil,
+						nil,
+						nil,
+						&LinkAddr{},
+						&Inet4Addr{},
+						nil,
+						&Inet4Addr{},
+					},
+				},
+				{
+					Type: sysRTM_GET,
+					Addrs: []Addr{
+						&Inet4Addr{IP: [4]byte{127, 0, 0, 1}},
+					},
+				},
+			}...)
+		case sysAF_INET6:
+			ms = append(ms, []RouteMessage{
+				{
+					Type: sysRTM_GET,
+					Addrs: []Addr{
+						&Inet6Addr{IP: [16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}},
+						nil,
+						nil,
+						nil,
+						&LinkAddr{},
+						&Inet6Addr{},
+						nil,
+						&Inet6Addr{},
+					},
+				},
+				{
+					Type: sysRTM_GET,
+					Addrs: []Addr{
+						&Inet6Addr{IP: [16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}},
+					},
+				},
+			}...)
+		}
+	}
+	for i, m := range ms {
+		m.ID = uintptr(os.Getpid())
+		m.Seq = i + 1
+		wb, err := m.Marshal()
+		if err != nil {
+			t.Fatalf("%v: %v", m, err)
+		}
+		if _, err := syscall.Write(s, wb); err != nil {
+			t.Fatalf("%v: %v", m, err)
+		}
+		rb := make([]byte, os.Getpagesize())
+		n, err := syscall.Read(s, rb)
+		if err != nil {
+			t.Fatalf("%v: %v", m, err)
+		}
+		rms, err := ParseRIB(0, rb[:n])
+		if err != nil {
+			t.Fatalf("%v: %v", m, err)
+		}
+		for _, rm := range rms {
+			err := rm.(*RouteMessage).Err
+			if err != nil {
+				t.Errorf("%v: %v", m, err)
+			}
+		}
+		ss, err := msgs(rms).validate()
+		if err != nil {
+			t.Fatalf("%v: %v", m, err)
+		}
+		for _, s := range ss {
+			t.Log(s)
+		}
+
+	}
+}
diff --git a/src/vendor/golang_org/x/net/route/route.go b/src/vendor/golang_org/x/net/route/route.go
index c986e29ebc..081da0d5c1 100644
--- a/src/vendor/golang_org/x/net/route/route.go
+++ b/src/vendor/golang_org/x/net/route/route.go
@@ -24,21 +24,70 @@ var (
 	errMessageTooShort    = errors.New("message too short")
 	errInvalidMessage     = errors.New("invalid message")
 	errInvalidAddr        = errors.New("invalid address")
+	errShortBuffer        = errors.New("short buffer")
 )
 
 // A RouteMessage represents a message conveying an address prefix, a
 // nexthop address and an output interface.
+//
+// Unlike other messages, this message can be used to query adjacency
+// information for the given address prefix, to add a new route, and
+// to delete or modify the existing route from the routing information
+// base inside the kernel by writing and reading route messages on a
+// routing socket.
+//
+// For the manipulation of routing information, the route message must
+// contain appropriate fields that include:
+//
+//	Version       = <must be specified>
+//	Type          = <must be specified>
+//	Flags         = <must be specified>
+//	Index         = <must be specified if necessary>
+//	ID            = <must be specified>
+//	Seq           = <must be specified>
+//	Addrs         = <must be specified>
+//
+// The Type field specifies a type of manipulation, the Flags field
+// specifies a class of target information and the Addrs field
+// specifies target information like the following:
+//
+//	route.RouteMessage{
+//		Version: RTM_VERSION,
+//		Type: RTM_GET,
+//		Flags: RTF_UP | RTF_HOST,
+//		ID: uintptr(os.Getpid()),
+//		Seq: 1,
+//		Addrs: []route.Addrs{
+//			RTAX_DST: &route.Inet4Addr{ ... },
+//			RTAX_IFP: &route.LinkAddr{ ... },
+//			RTAX_BRD: &route.Inet4Addr{ ... },
+//		},
+//	}
+//
+// The values for the above fields depend on the implementation of
+// each operating system.
+//
+// The Err field on a response message contains an error value on the
+// requested operation. If non-nil, the requested operation is failed.
 type RouteMessage struct {
-	Version int    // message version
-	Type    int    // message type
-	Flags   int    // route flags
-	Index   int    // interface index when atatched
-	Addrs   []Addr // addresses
+	Version int     // message version
+	Type    int     // message type
+	Flags   int     // route flags
+	Index   int     // interface index when atatched
+	ID      uintptr // sender's identifier; usually process ID
+	Seq     int     // sequence number
+	Err     error   // error on requested operation
+	Addrs   []Addr  // addresses
 
 	extOff int    // offset of header extension
 	raw    []byte // raw message
 }
 
+// Marshal returns the binary encoding of m.
+func (m *RouteMessage) Marshal() ([]byte, error) {
+	return m.marshal()
+}
+
 // A RIBType reprensents a type of routing information base.
 type RIBType int
 
diff --git a/src/vendor/golang_org/x/net/route/route_classic.go b/src/vendor/golang_org/x/net/route/route_classic.go
index d333c6aa52..61b2bb4add 100644
--- a/src/vendor/golang_org/x/net/route/route_classic.go
+++ b/src/vendor/golang_org/x/net/route/route_classic.go
@@ -6,6 +6,36 @@
 
 package route
 
+import "syscall"
+
+func (m *RouteMessage) marshal() ([]byte, error) {
+	w, ok := wireFormats[m.Type]
+	if !ok {
+		return nil, errUnsupportedMessage
+	}
+	l := w.bodyOff + addrsSpace(m.Addrs)
+	b := make([]byte, l)
+	nativeEndian.PutUint16(b[:2], uint16(l))
+	if m.Version == 0 {
+		b[2] = sysRTM_VERSION
+	} else {
+		b[2] = byte(m.Version)
+	}
+	b[3] = byte(m.Type)
+	nativeEndian.PutUint32(b[8:12], uint32(m.Flags))
+	nativeEndian.PutUint16(b[4:6], uint16(m.Index))
+	nativeEndian.PutUint32(b[16:20], uint32(m.ID))
+	nativeEndian.PutUint32(b[20:24], uint32(m.Seq))
+	attrs, err := marshalAddrs(b[w.bodyOff:], m.Addrs)
+	if err != nil {
+		return nil, err
+	}
+	if attrs > 0 {
+		nativeEndian.PutUint32(b[12:16], uint32(attrs))
+	}
+	return b, nil
+}
+
 func (w *wireFormat) parseRouteMessage(typ RIBType, b []byte) (Message, error) {
 	if len(b) < w.bodyOff {
 		return nil, errMessageTooShort
@@ -19,9 +49,15 @@ func (w *wireFormat) parseRouteMessage(typ RIBType, b []byte) (Message, error) {
 		Type:    int(b[3]),
 		Flags:   int(nativeEndian.Uint32(b[8:12])),
 		Index:   int(nativeEndian.Uint16(b[4:6])),
+		ID:      uintptr(nativeEndian.Uint32(b[16:20])),
+		Seq:     int(nativeEndian.Uint32(b[20:24])),
 		extOff:  w.extOff,
 		raw:     b[:l],
 	}
+	errno := syscall.Errno(nativeEndian.Uint32(b[28:32]))
+	if errno != 0 {
+		m.Err = errno
+	}
 	var err error
 	m.Addrs, err = parseAddrs(uint(nativeEndian.Uint32(b[12:16])), parseKernelInetAddr, b[w.bodyOff:])
 	if err != nil {
diff --git a/src/vendor/golang_org/x/net/route/route_openbsd.go b/src/vendor/golang_org/x/net/route/route_openbsd.go
index 76eae40d80..daf2e90c47 100644
--- a/src/vendor/golang_org/x/net/route/route_openbsd.go
+++ b/src/vendor/golang_org/x/net/route/route_openbsd.go
@@ -4,8 +4,35 @@
 
 package route
 
+import "syscall"
+
+func (m *RouteMessage) marshal() ([]byte, error) {
+	l := sizeofRtMsghdr + addrsSpace(m.Addrs)
+	b := make([]byte, l)
+	nativeEndian.PutUint16(b[:2], uint16(l))
+	if m.Version == 0 {
+		b[2] = sysRTM_VERSION
+	} else {
+		b[2] = byte(m.Version)
+	}
+	b[3] = byte(m.Type)
+	nativeEndian.PutUint16(b[4:6], uint16(sizeofRtMsghdr))
+	nativeEndian.PutUint32(b[16:20], uint32(m.Flags))
+	nativeEndian.PutUint16(b[6:8], uint16(m.Index))
+	nativeEndian.PutUint32(b[24:28], uint32(m.ID))
+	nativeEndian.PutUint32(b[28:32], uint32(m.Seq))
+	attrs, err := marshalAddrs(b[sizeofRtMsghdr:], m.Addrs)
+	if err != nil {
+		return nil, err
+	}
+	if attrs > 0 {
+		nativeEndian.PutUint32(b[12:16], uint32(attrs))
+	}
+	return b, nil
+}
+
 func (*wireFormat) parseRouteMessage(_ RIBType, b []byte) (Message, error) {
-	if len(b) < 40 {
+	if len(b) < sizeofRtMsghdr {
 		return nil, errMessageTooShort
 	}
 	l := int(nativeEndian.Uint16(b[:2]))
@@ -17,12 +44,18 @@ func (*wireFormat) parseRouteMessage(_ RIBType, b []byte) (Message, error) {
 		Type:    int(b[3]),
 		Flags:   int(nativeEndian.Uint32(b[16:20])),
 		Index:   int(nativeEndian.Uint16(b[6:8])),
+		ID:      uintptr(nativeEndian.Uint32(b[24:28])),
+		Seq:     int(nativeEndian.Uint32(b[28:32])),
 		raw:     b[:l],
 	}
 	ll := int(nativeEndian.Uint16(b[4:6]))
 	if len(b) < ll {
 		return nil, errInvalidMessage
 	}
+	errno := syscall.Errno(nativeEndian.Uint32(b[32:36]))
+	if errno != 0 {
+		m.Err = errno
+	}
 	as, err := parseAddrs(uint(nativeEndian.Uint32(b[12:16])), parseKernelInetAddr, b[ll:])
 	if err != nil {
 		return nil, err
diff --git a/src/vendor/golang_org/x/net/route/sys.go b/src/vendor/golang_org/x/net/route/sys.go
index 80ca83ae13..3d0ee9b148 100644
--- a/src/vendor/golang_org/x/net/route/sys.go
+++ b/src/vendor/golang_org/x/net/route/sys.go
@@ -11,7 +11,7 @@ import "unsafe"
 var (
 	nativeEndian binaryByteOrder
 	kernelAlign  int
-	parseFns     map[int]parseFn
+	wireFormats  map[int]*wireFormat
 )
 
 func init() {
@@ -22,7 +22,7 @@ func init() {
 	} else {
 		nativeEndian = bigEndian
 	}
-	kernelAlign, parseFns = probeRoutingStack()
+	kernelAlign, wireFormats = probeRoutingStack()
 }
 
 func roundup(l int) int {
@@ -32,9 +32,8 @@ func roundup(l int) int {
 	return (l + kernelAlign - 1) & ^(kernelAlign - 1)
 }
 
-type parseFn func(RIBType, []byte) (Message, error)
-
 type wireFormat struct {
 	extOff  int // offset of header extension
 	bodyOff int // offset of message body
+	parse   func(RIBType, []byte) (Message, error)
 }
diff --git a/src/vendor/golang_org/x/net/route/sys_darwin.go b/src/vendor/golang_org/x/net/route/sys_darwin.go
index fff3a0fd1d..e742c919db 100644
--- a/src/vendor/golang_org/x/net/route/sys_darwin.go
+++ b/src/vendor/golang_org/x/net/route/sys_darwin.go
@@ -49,32 +49,39 @@ func (m *InterfaceMessage) Sys() []Sys {
 	}
 }
 
-func probeRoutingStack() (int, map[int]parseFn) {
+func probeRoutingStack() (int, map[int]*wireFormat) {
 	rtm := &wireFormat{extOff: 36, bodyOff: sizeofRtMsghdrDarwin15}
+	rtm.parse = rtm.parseRouteMessage
 	rtm2 := &wireFormat{extOff: 36, bodyOff: sizeofRtMsghdr2Darwin15}
+	rtm2.parse = rtm2.parseRouteMessage
 	ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrDarwin15}
+	ifm.parse = ifm.parseInterfaceMessage
 	ifm2 := &wireFormat{extOff: 32, bodyOff: sizeofIfMsghdr2Darwin15}
+	ifm2.parse = ifm2.parseInterfaceMessage
 	ifam := &wireFormat{extOff: sizeofIfaMsghdrDarwin15, bodyOff: sizeofIfaMsghdrDarwin15}
+	ifam.parse = ifam.parseInterfaceAddrMessage
 	ifmam := &wireFormat{extOff: sizeofIfmaMsghdrDarwin15, bodyOff: sizeofIfmaMsghdrDarwin15}
+	ifmam.parse = ifmam.parseInterfaceMulticastAddrMessage
 	ifmam2 := &wireFormat{extOff: sizeofIfmaMsghdr2Darwin15, bodyOff: sizeofIfmaMsghdr2Darwin15}
+	ifmam2.parse = ifmam2.parseInterfaceMulticastAddrMessage
 	// Darwin kernels require 32-bit aligned access to routing facilities.
-	return 4, map[int]parseFn{
-		sysRTM_ADD:       rtm.parseRouteMessage,
-		sysRTM_DELETE:    rtm.parseRouteMessage,
-		sysRTM_CHANGE:    rtm.parseRouteMessage,
-		sysRTM_GET:       rtm.parseRouteMessage,
-		sysRTM_LOSING:    rtm.parseRouteMessage,
-		sysRTM_REDIRECT:  rtm.parseRouteMessage,
-		sysRTM_MISS:      rtm.parseRouteMessage,
-		sysRTM_LOCK:      rtm.parseRouteMessage,
-		sysRTM_RESOLVE:   rtm.parseRouteMessage,
-		sysRTM_NEWADDR:   ifam.parseInterfaceAddrMessage,
-		sysRTM_DELADDR:   ifam.parseInterfaceAddrMessage,
-		sysRTM_IFINFO:    ifm.parseInterfaceMessage,
-		sysRTM_NEWMADDR:  ifmam.parseInterfaceMulticastAddrMessage,
-		sysRTM_DELMADDR:  ifmam.parseInterfaceMulticastAddrMessage,
-		sysRTM_IFINFO2:   ifm2.parseInterfaceMessage,
-		sysRTM_NEWMADDR2: ifmam2.parseInterfaceMulticastAddrMessage,
-		sysRTM_GET2:      rtm2.parseRouteMessage,
+	return 4, map[int]*wireFormat{
+		sysRTM_ADD:       rtm,
+		sysRTM_DELETE:    rtm,
+		sysRTM_CHANGE:    rtm,
+		sysRTM_GET:       rtm,
+		sysRTM_LOSING:    rtm,
+		sysRTM_REDIRECT:  rtm,
+		sysRTM_MISS:      rtm,
+		sysRTM_LOCK:      rtm,
+		sysRTM_RESOLVE:   rtm,
+		sysRTM_NEWADDR:   ifam,
+		sysRTM_DELADDR:   ifam,
+		sysRTM_IFINFO:    ifm,
+		sysRTM_NEWMADDR:  ifmam,
+		sysRTM_DELMADDR:  ifmam,
+		sysRTM_IFINFO2:   ifm2,
+		sysRTM_NEWMADDR2: ifmam2,
+		sysRTM_GET2:      rtm2,
 	}
 }
diff --git a/src/vendor/golang_org/x/net/route/sys_dragonfly.go b/src/vendor/golang_org/x/net/route/sys_dragonfly.go
index da848b3d07..b175cb18ce 100644
--- a/src/vendor/golang_org/x/net/route/sys_dragonfly.go
+++ b/src/vendor/golang_org/x/net/route/sys_dragonfly.go
@@ -44,28 +44,33 @@ func (m *InterfaceMessage) Sys() []Sys {
 	}
 }
 
-func probeRoutingStack() (int, map[int]parseFn) {
+func probeRoutingStack() (int, map[int]*wireFormat) {
 	var p uintptr
 	rtm := &wireFormat{extOff: 40, bodyOff: sizeofRtMsghdrDragonFlyBSD4}
+	rtm.parse = rtm.parseRouteMessage
 	ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrDragonFlyBSD4}
+	ifm.parse = ifm.parseInterfaceMessage
 	ifam := &wireFormat{extOff: sizeofIfaMsghdrDragonFlyBSD4, bodyOff: sizeofIfaMsghdrDragonFlyBSD4}
+	ifam.parse = ifam.parseInterfaceAddrMessage
 	ifmam := &wireFormat{extOff: sizeofIfmaMsghdrDragonFlyBSD4, bodyOff: sizeofIfmaMsghdrDragonFlyBSD4}
+	ifmam.parse = ifmam.parseInterfaceMulticastAddrMessage
 	ifanm := &wireFormat{extOff: sizeofIfAnnouncemsghdrDragonFlyBSD4, bodyOff: sizeofIfAnnouncemsghdrDragonFlyBSD4}
-	return int(unsafe.Sizeof(p)), map[int]parseFn{
-		sysRTM_ADD:        rtm.parseRouteMessage,
-		sysRTM_DELETE:     rtm.parseRouteMessage,
-		sysRTM_CHANGE:     rtm.parseRouteMessage,
-		sysRTM_GET:        rtm.parseRouteMessage,
-		sysRTM_LOSING:     rtm.parseRouteMessage,
-		sysRTM_REDIRECT:   rtm.parseRouteMessage,
-		sysRTM_MISS:       rtm.parseRouteMessage,
-		sysRTM_LOCK:       rtm.parseRouteMessage,
-		sysRTM_RESOLVE:    rtm.parseRouteMessage,
-		sysRTM_NEWADDR:    ifam.parseInterfaceAddrMessage,
-		sysRTM_DELADDR:    ifam.parseInterfaceAddrMessage,
-		sysRTM_IFINFO:     ifm.parseInterfaceMessage,
-		sysRTM_NEWMADDR:   ifmam.parseInterfaceMulticastAddrMessage,
-		sysRTM_DELMADDR:   ifmam.parseInterfaceMulticastAddrMessage,
-		sysRTM_IFANNOUNCE: ifanm.parseInterfaceAnnounceMessage,
+	ifanm.parse = ifanm.parseInterfaceAnnounceMessage
+	return int(unsafe.Sizeof(p)), map[int]*wireFormat{
+		sysRTM_ADD:        rtm,
+		sysRTM_DELETE:     rtm,
+		sysRTM_CHANGE:     rtm,
+		sysRTM_GET:        rtm,
+		sysRTM_LOSING:     rtm,
+		sysRTM_REDIRECT:   rtm,
+		sysRTM_MISS:       rtm,
+		sysRTM_LOCK:       rtm,
+		sysRTM_RESOLVE:    rtm,
+		sysRTM_NEWADDR:    ifam,
+		sysRTM_DELADDR:    ifam,
+		sysRTM_IFINFO:     ifm,
+		sysRTM_NEWMADDR:   ifmam,
+		sysRTM_DELMADDR:   ifmam,
+		sysRTM_IFANNOUNCE: ifanm,
 	}
 }
diff --git a/src/vendor/golang_org/x/net/route/sys_freebsd.go b/src/vendor/golang_org/x/net/route/sys_freebsd.go
index 7b05c1a5a0..010d4ae782 100644
--- a/src/vendor/golang_org/x/net/route/sys_freebsd.go
+++ b/src/vendor/golang_org/x/net/route/sys_freebsd.go
@@ -54,7 +54,7 @@ func (m *InterfaceMessage) Sys() []Sys {
 	}
 }
 
-func probeRoutingStack() (int, map[int]parseFn) {
+func probeRoutingStack() (int, map[int]*wireFormat) {
 	var p uintptr
 	wordSize := int(unsafe.Sizeof(p))
 	align := int(unsafe.Sizeof(p))
@@ -130,21 +130,26 @@ func probeRoutingStack() (int, map[int]parseFn) {
 			ifm.bodyOff = sizeofIfMsghdrFreeBSD11
 		}
 	}
-	return align, map[int]parseFn{
-		sysRTM_ADD:        rtm.parseRouteMessage,
-		sysRTM_DELETE:     rtm.parseRouteMessage,
-		sysRTM_CHANGE:     rtm.parseRouteMessage,
-		sysRTM_GET:        rtm.parseRouteMessage,
-		sysRTM_LOSING:     rtm.parseRouteMessage,
-		sysRTM_REDIRECT:   rtm.parseRouteMessage,
-		sysRTM_MISS:       rtm.parseRouteMessage,
-		sysRTM_LOCK:       rtm.parseRouteMessage,
-		sysRTM_RESOLVE:    rtm.parseRouteMessage,
-		sysRTM_NEWADDR:    ifam.parseInterfaceAddrMessage,
-		sysRTM_DELADDR:    ifam.parseInterfaceAddrMessage,
-		sysRTM_IFINFO:     ifm.parseInterfaceMessage,
-		sysRTM_NEWMADDR:   ifmam.parseInterfaceMulticastAddrMessage,
-		sysRTM_DELMADDR:   ifmam.parseInterfaceMulticastAddrMessage,
-		sysRTM_IFANNOUNCE: ifanm.parseInterfaceAnnounceMessage,
+	rtm.parse = rtm.parseRouteMessage
+	ifm.parse = ifm.parseInterfaceMessage
+	ifam.parse = ifam.parseInterfaceAddrMessage
+	ifmam.parse = ifmam.parseInterfaceMulticastAddrMessage
+	ifanm.parse = ifanm.parseInterfaceAnnounceMessage
+	return align, map[int]*wireFormat{
+		sysRTM_ADD:        rtm,
+		sysRTM_DELETE:     rtm,
+		sysRTM_CHANGE:     rtm,
+		sysRTM_GET:        rtm,
+		sysRTM_LOSING:     rtm,
+		sysRTM_REDIRECT:   rtm,
+		sysRTM_MISS:       rtm,
+		sysRTM_LOCK:       rtm,
+		sysRTM_RESOLVE:    rtm,
+		sysRTM_NEWADDR:    ifam,
+		sysRTM_DELADDR:    ifam,
+		sysRTM_IFINFO:     ifm,
+		sysRTM_NEWMADDR:   ifmam,
+		sysRTM_DELMADDR:   ifmam,
+		sysRTM_IFANNOUNCE: ifanm,
 	}
 }
diff --git a/src/vendor/golang_org/x/net/route/sys_netbsd.go b/src/vendor/golang_org/x/net/route/sys_netbsd.go
index 4d8076b518..b4e3301403 100644
--- a/src/vendor/golang_org/x/net/route/sys_netbsd.go
+++ b/src/vendor/golang_org/x/net/route/sys_netbsd.go
@@ -42,26 +42,30 @@ func (m *InterfaceMessage) Sys() []Sys {
 	}
 }
 
-func probeRoutingStack() (int, map[int]parseFn) {
+func probeRoutingStack() (int, map[int]*wireFormat) {
 	rtm := &wireFormat{extOff: 40, bodyOff: sizeofRtMsghdrNetBSD7}
+	rtm.parse = rtm.parseRouteMessage
 	ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrNetBSD7}
+	ifm.parse = ifm.parseInterfaceMessage
 	ifam := &wireFormat{extOff: sizeofIfaMsghdrNetBSD7, bodyOff: sizeofIfaMsghdrNetBSD7}
+	ifam.parse = ifam.parseInterfaceAddrMessage
 	ifanm := &wireFormat{extOff: sizeofIfAnnouncemsghdrNetBSD7, bodyOff: sizeofIfAnnouncemsghdrNetBSD7}
+	ifanm.parse = ifanm.parseInterfaceAnnounceMessage
 	// NetBSD 6 and above kernels require 64-bit aligned access to
 	// routing facilities.
-	return 8, map[int]parseFn{
-		sysRTM_ADD:        rtm.parseRouteMessage,
-		sysRTM_DELETE:     rtm.parseRouteMessage,
-		sysRTM_CHANGE:     rtm.parseRouteMessage,
-		sysRTM_GET:        rtm.parseRouteMessage,
-		sysRTM_LOSING:     rtm.parseRouteMessage,
-		sysRTM_REDIRECT:   rtm.parseRouteMessage,
-		sysRTM_MISS:       rtm.parseRouteMessage,
-		sysRTM_LOCK:       rtm.parseRouteMessage,
-		sysRTM_RESOLVE:    rtm.parseRouteMessage,
-		sysRTM_NEWADDR:    ifam.parseInterfaceAddrMessage,
-		sysRTM_DELADDR:    ifam.parseInterfaceAddrMessage,
-		sysRTM_IFANNOUNCE: ifanm.parseInterfaceAnnounceMessage,
-		sysRTM_IFINFO:     ifm.parseInterfaceMessage,
+	return 8, map[int]*wireFormat{
+		sysRTM_ADD:        rtm,
+		sysRTM_DELETE:     rtm,
+		sysRTM_CHANGE:     rtm,
+		sysRTM_GET:        rtm,
+		sysRTM_LOSING:     rtm,
+		sysRTM_REDIRECT:   rtm,
+		sysRTM_MISS:       rtm,
+		sysRTM_LOCK:       rtm,
+		sysRTM_RESOLVE:    rtm,
+		sysRTM_NEWADDR:    ifam,
+		sysRTM_DELADDR:    ifam,
+		sysRTM_IFANNOUNCE: ifanm,
+		sysRTM_IFINFO:     ifm,
 	}
 }
diff --git a/src/vendor/golang_org/x/net/route/sys_openbsd.go b/src/vendor/golang_org/x/net/route/sys_openbsd.go
index 26d0438696..8798dc4ca3 100644
--- a/src/vendor/golang_org/x/net/route/sys_openbsd.go
+++ b/src/vendor/golang_org/x/net/route/sys_openbsd.go
@@ -51,22 +51,29 @@ func (m *InterfaceMessage) Sys() []Sys {
 	}
 }
 
-func probeRoutingStack() (int, map[int]parseFn) {
+func probeRoutingStack() (int, map[int]*wireFormat) {
 	var p uintptr
-	nooff := &wireFormat{extOff: -1, bodyOff: -1}
-	return int(unsafe.Sizeof(p)), map[int]parseFn{
-		sysRTM_ADD:        nooff.parseRouteMessage,
-		sysRTM_DELETE:     nooff.parseRouteMessage,
-		sysRTM_CHANGE:     nooff.parseRouteMessage,
-		sysRTM_GET:        nooff.parseRouteMessage,
-		sysRTM_LOSING:     nooff.parseRouteMessage,
-		sysRTM_REDIRECT:   nooff.parseRouteMessage,
-		sysRTM_MISS:       nooff.parseRouteMessage,
-		sysRTM_LOCK:       nooff.parseRouteMessage,
-		sysRTM_RESOLVE:    nooff.parseRouteMessage,
-		sysRTM_NEWADDR:    nooff.parseInterfaceAddrMessage,
-		sysRTM_DELADDR:    nooff.parseInterfaceAddrMessage,
-		sysRTM_IFINFO:     nooff.parseInterfaceMessage,
-		sysRTM_IFANNOUNCE: nooff.parseInterfaceAnnounceMessage,
+	rtm := &wireFormat{extOff: -1, bodyOff: -1}
+	rtm.parse = rtm.parseRouteMessage
+	ifm := &wireFormat{extOff: -1, bodyOff: -1}
+	ifm.parse = ifm.parseInterfaceMessage
+	ifam := &wireFormat{extOff: -1, bodyOff: -1}
+	ifam.parse = ifam.parseInterfaceAddrMessage
+	ifanm := &wireFormat{extOff: -1, bodyOff: -1}
+	ifanm.parse = ifanm.parseInterfaceAnnounceMessage
+	return int(unsafe.Sizeof(p)), map[int]*wireFormat{
+		sysRTM_ADD:        rtm,
+		sysRTM_DELETE:     rtm,
+		sysRTM_CHANGE:     rtm,
+		sysRTM_GET:        rtm,
+		sysRTM_LOSING:     rtm,
+		sysRTM_REDIRECT:   rtm,
+		sysRTM_MISS:       rtm,
+		sysRTM_LOCK:       rtm,
+		sysRTM_RESOLVE:    rtm,
+		sysRTM_NEWADDR:    ifam,
+		sysRTM_DELADDR:    ifam,
+		sysRTM_IFINFO:     ifm,
+		sysRTM_IFANNOUNCE: ifanm,
 	}
 }
diff --git a/src/vendor/golang_org/x/net/route/syscall.go b/src/vendor/golang_org/x/net/route/syscall.go
index d136325a30..c211188b10 100644
--- a/src/vendor/golang_org/x/net/route/syscall.go
+++ b/src/vendor/golang_org/x/net/route/syscall.go
@@ -11,10 +11,6 @@ import (
 	"unsafe"
 )
 
-// TODO: replace with runtime.KeepAlive when available
-//go:noescape
-func keepAlive(p unsafe.Pointer)
-
 var zero uintptr
 
 func sysctl(mib []int32, old *byte, oldlen *uintptr, new *byte, newlen uintptr) error {
@@ -25,7 +21,6 @@ func sysctl(mib []int32, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		p = unsafe.Pointer(&zero)
 	}
 	_, _, errno := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(p), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	keepAlive(p)
 	if errno != 0 {
 		return error(errno)
 	}
diff --git a/src/vendor/golang_org/x/net/route/syscall.s b/src/vendor/golang_org/x/net/route/syscall.s
deleted file mode 100644
index fa6297f0aa..0000000000
--- a/src/vendor/golang_org/x/net/route/syscall.s
+++ /dev/null
@@ -1,8 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-#include "textflag.h"
-
-TEXT ·keepAlive(SB),NOSPLIT,$0
-	RET
diff --git a/src/vendor/golang_org/x/net/route/zsys_darwin.go b/src/vendor/golang_org/x/net/route/zsys_darwin.go
index 265b81cd50..4e2e1ab090 100644
--- a/src/vendor/golang_org/x/net/route/zsys_darwin.go
+++ b/src/vendor/golang_org/x/net/route/zsys_darwin.go
@@ -10,6 +10,8 @@ const (
 	sysAF_LINK   = 0x12
 	sysAF_INET6  = 0x1e
 
+	sysSOCK_RAW = 0x3
+
 	sysNET_RT_DUMP    = 0x1
 	sysNET_RT_FLAGS   = 0x2
 	sysNET_RT_IFLIST  = 0x3
@@ -90,4 +92,8 @@ const (
 	sizeofRtMsghdrDarwin15  = 0x5c
 	sizeofRtMsghdr2Darwin15 = 0x5c
 	sizeofRtMetricsDarwin15 = 0x38
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/src/vendor/golang_org/x/net/route/zsys_dragonfly.go b/src/vendor/golang_org/x/net/route/zsys_dragonfly.go
index dd36dece0f..719c88d11f 100644
--- a/src/vendor/golang_org/x/net/route/zsys_dragonfly.go
+++ b/src/vendor/golang_org/x/net/route/zsys_dragonfly.go
@@ -10,6 +10,8 @@ const (
 	sysAF_LINK   = 0x12
 	sysAF_INET6  = 0x1c
 
+	sysSOCK_RAW = 0x3
+
 	sysNET_RT_DUMP   = 0x1
 	sysNET_RT_FLAGS  = 0x2
 	sysNET_RT_IFLIST = 0x3
@@ -89,4 +91,8 @@ const (
 
 	sizeofRtMsghdrDragonFlyBSD4  = 0x98
 	sizeofRtMetricsDragonFlyBSD4 = 0x70
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/src/vendor/golang_org/x/net/route/zsys_freebsd_386.go b/src/vendor/golang_org/x/net/route/zsys_freebsd_386.go
index 9bac2e3900..b03bc01f65 100644
--- a/src/vendor/golang_org/x/net/route/zsys_freebsd_386.go
+++ b/src/vendor/golang_org/x/net/route/zsys_freebsd_386.go
@@ -10,6 +10,8 @@ const (
 	sysAF_LINK   = 0x12
 	sysAF_INET6  = 0x1c
 
+	sysSOCK_RAW = 0x3
+
 	sysNET_RT_DUMP     = 0x1
 	sysNET_RT_FLAGS    = 0x2
 	sysNET_RT_IFLIST   = 0x3
@@ -117,4 +119,8 @@ const (
 	sizeofIfDataFreeBSD9Emu  = 0x98
 	sizeofIfDataFreeBSD10Emu = 0x98
 	sizeofIfDataFreeBSD11Emu = 0x98
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/src/vendor/golang_org/x/net/route/zsys_freebsd_amd64.go b/src/vendor/golang_org/x/net/route/zsys_freebsd_amd64.go
index b1920d7ac1..0b675b3d3f 100644
--- a/src/vendor/golang_org/x/net/route/zsys_freebsd_amd64.go
+++ b/src/vendor/golang_org/x/net/route/zsys_freebsd_amd64.go
@@ -10,6 +10,8 @@ const (
 	sysAF_LINK   = 0x12
 	sysAF_INET6  = 0x1c
 
+	sysSOCK_RAW = 0x3
+
 	sysNET_RT_DUMP     = 0x1
 	sysNET_RT_FLAGS    = 0x2
 	sysNET_RT_IFLIST   = 0x3
@@ -114,4 +116,8 @@ const (
 	sizeofIfDataFreeBSD9Emu  = 0x98
 	sizeofIfDataFreeBSD10Emu = 0x98
 	sizeofIfDataFreeBSD11Emu = 0x98
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/src/vendor/golang_org/x/net/route/zsys_freebsd_arm.go b/src/vendor/golang_org/x/net/route/zsys_freebsd_arm.go
index a034d6fcbf..58f8ea16f2 100644
--- a/src/vendor/golang_org/x/net/route/zsys_freebsd_arm.go
+++ b/src/vendor/golang_org/x/net/route/zsys_freebsd_arm.go
@@ -10,6 +10,8 @@ const (
 	sysAF_LINK   = 0x12
 	sysAF_INET6  = 0x1c
 
+	sysSOCK_RAW = 0x3
+
 	sysNET_RT_DUMP     = 0x1
 	sysNET_RT_FLAGS    = 0x2
 	sysNET_RT_IFLIST   = 0x3
@@ -114,4 +116,8 @@ const (
 	sizeofIfDataFreeBSD9Emu  = 0x60
 	sizeofIfDataFreeBSD10Emu = 0x60
 	sizeofIfDataFreeBSD11Emu = 0x98
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/src/vendor/golang_org/x/net/route/zsys_netbsd.go b/src/vendor/golang_org/x/net/route/zsys_netbsd.go
index aa4aad1613..e0df45e8b5 100644
--- a/src/vendor/golang_org/x/net/route/zsys_netbsd.go
+++ b/src/vendor/golang_org/x/net/route/zsys_netbsd.go
@@ -10,6 +10,8 @@ const (
 	sysAF_LINK   = 0x12
 	sysAF_INET6  = 0x18
 
+	sysSOCK_RAW = 0x3
+
 	sysNET_RT_DUMP   = 0x1
 	sysNET_RT_FLAGS  = 0x2
 	sysNET_RT_IFLIST = 0x5
@@ -88,4 +90,8 @@ const (
 
 	sizeofRtMsghdrNetBSD7  = 0x78
 	sizeofRtMetricsNetBSD7 = 0x50
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/src/vendor/golang_org/x/net/route/zsys_openbsd.go b/src/vendor/golang_org/x/net/route/zsys_openbsd.go
index 4fadc4e8fa..f5a1ff9673 100644
--- a/src/vendor/golang_org/x/net/route/zsys_openbsd.go
+++ b/src/vendor/golang_org/x/net/route/zsys_openbsd.go
@@ -10,6 +10,8 @@ const (
 	sysAF_LINK   = 0x12
 	sysAF_INET6  = 0x18
 
+	sysSOCK_RAW = 0x3
+
 	sysNET_RT_DUMP    = 0x1
 	sysNET_RT_FLAGS   = 0x2
 	sysNET_RT_IFLIST  = 0x3
@@ -78,3 +80,11 @@ const (
 	sysRTAX_LABEL   = 0xa
 	sysRTAX_MAX     = 0xb
 )
+
+const (
+	sizeofRtMsghdr = 0x60
+
+	sizeofSockaddrStorage = 0x100
+	sizeofSockaddrInet    = 0x10
+	sizeofSockaddrInet6   = 0x1c
+)