windows: add enums for IpAdapterUnicastAddress

These are for the enum fields in IpAdapterUnicastAddress.

Change-Id: Ibcb6ce674ab41a94dbe46d394f035208a94b6dae
GitHub-Last-Rev: 1837ff9c32357fe7eb64257001b9bf42485b1c8c
GitHub-Pull-Request: golang/sys#204
Reviewed-on: https://go-review.googlesource.com/c/sys/+/598895
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: David Chase <drchase@google.com>

windows/types_windows.go

@@ -2031,6 +2031,50 @@ const (
 	IF_TYPE_IEEE1394           = 144
 )
 
+// Enum NL_PREFIX_ORIGIN for [IpAdapterUnicastAddress], see
+// https://learn.microsoft.com/en-us/windows/win32/api/nldef/ne-nldef-nl_prefix_origin
+const (
+	IpPrefixOriginOther               = 0
+	IpPrefixOriginManual              = 1
+	IpPrefixOriginWellKnown           = 2
+	IpPrefixOriginDhcp                = 3
+	IpPrefixOriginRouterAdvertisement = 4
+	IpPrefixOriginUnchanged           = 1 << 4
+)
+
+// Enum NL_SUFFIX_ORIGIN for [IpAdapterUnicastAddress], see
+// https://learn.microsoft.com/en-us/windows/win32/api/nldef/ne-nldef-nl_suffix_origin
+const (
+	NlsoOther                      = 0
+	NlsoManual                     = 1
+	NlsoWellKnown                  = 2
+	NlsoDhcp                       = 3
+	NlsoLinkLayerAddress           = 4
+	NlsoRandom                     = 5
+	IpSuffixOriginOther            = 0
+	IpSuffixOriginManual           = 1
+	IpSuffixOriginWellKnown        = 2
+	IpSuffixOriginDhcp             = 3
+	IpSuffixOriginLinkLayerAddress = 4
+	IpSuffixOriginRandom           = 5
+	IpSuffixOriginUnchanged        = 1 << 4
+)
+
+// Enum NL_DAD_STATE for [IpAdapterUnicastAddress], see
+// https://learn.microsoft.com/en-us/windows/win32/api/nldef/ne-nldef-nl_dad_state
+const (
+	NldsInvalid          = 0
+	NldsTentative        = 1
+	NldsDuplicate        = 2
+	NldsDeprecated       = 3
+	NldsPreferred        = 4
+	IpDadStateInvalid    = 0
+	IpDadStateTentative  = 1
+	IpDadStateDuplicate  = 2
+	IpDadStateDeprecated = 3
+	IpDadStatePreferred  = 4
+)
+
 type SocketAddress struct {
 	Sockaddr       *syscall.RawSockaddrAny
 	SockaddrLength int32