diff --git a/src/pkg/net/multicast_test.go b/src/pkg/net/multicast_test.go
index 0c9a0355e64..06d430e90b9 100644
--- a/src/pkg/net/multicast_test.go
+++ b/src/pkg/net/multicast_test.go
@@ -5,10 +5,14 @@
 package net
 
 import (
+	"runtime"
 	"testing"
 )
 
 func TestMulticastJoinAndLeave(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		return
+	}
 	addr := &UDPAddr{
 		IP:   IPv4zero,
 		Port: 0,
diff --git a/src/pkg/syscall/syscall_windows.go b/src/pkg/syscall/syscall_windows.go
index 658e94c0f3c..e194feae30e 100644
--- a/src/pkg/syscall/syscall_windows.go
+++ b/src/pkg/syscall/syscall_windows.go
@@ -703,8 +703,19 @@ type Linger struct {
 	Linger int32
 }
 
-func SetsockoptLinger(fd, level, opt int, l *Linger) (errno int) { return EWINDOWS }
-func BindToDevice(fd int, device string) (errno int)             { return EWINDOWS }
+const (
+	IP_ADD_MEMBERSHIP = iota
+	IP_DROP_MEMBERSHIP
+)
+
+type IpMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+func SetsockoptLinger(fd, level, opt int, l *Linger) (errno int)    { return EWINDOWS }
+func SetsockoptIpMreq(fd, level, opt int, mreq *IpMreq) (errno int) { return EWINDOWS }
+func BindToDevice(fd int, device string) (errno int)                { return EWINDOWS }
 
 // TODO(brainman): fix all needed for os