diff --git a/windows/types_windows.go b/windows/types_windows.go
index ee27936..2aa7716 100644
--- a/windows/types_windows.go
+++ b/windows/types_windows.go
@@ -4,7 +4,11 @@
 
 package windows
 
-import "syscall"
+import (
+	"net"
+	"syscall"
+	"unsafe"
+)
 
 const (
 	// Invented values to support what package os expects.
@@ -1314,6 +1318,16 @@
 	SockaddrLength int32
 }
 
+// IP returns an IPv4 or IPv6 address, or nil if the underlying SocketAddress is neither.
+func (addr *SocketAddress) IP() net.IP {
+	if uintptr(addr.SockaddrLength) >= unsafe.Sizeof(RawSockaddrInet4{}) && addr.Sockaddr.Addr.Family == AF_INET {
+		return (*RawSockaddrInet4)(unsafe.Pointer(addr.Sockaddr)).Addr[:]
+	} else if uintptr(addr.SockaddrLength) >= unsafe.Sizeof(RawSockaddrInet6{}) && addr.Sockaddr.Addr.Family == AF_INET6 {
+		return (*RawSockaddrInet6)(unsafe.Pointer(addr.Sockaddr)).Addr[:]
+	}
+	return nil
+}
+
 type IpAdapterUnicastAddress struct {
 	Length             uint32
 	Flags              uint32