windows: add flags for GetAdaptersAddresses

This commit adds all missing flags for GetAdaptersAddresses.

Change-Id: I874623b6ac77af4ced49205493258e118a4f1b26
GitHub-Last-Rev: 384c92a2808112d156e93c41ef092871efd77354
GitHub-Pull-Request: golang/sys#203
Reviewed-on: https://go-review.googlesource.com/c/sys/+/597915
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>

windows/types_windows.go

@@ -2003,7 +2003,21 @@ const (
 	MOVEFILE_FAIL_IF_NOT_TRACKABLE = 0x20
 )
 
-const GAA_FLAG_INCLUDE_PREFIX = 0x00000010
+// Flags for GetAdaptersAddresses, see
+// https://learn.microsoft.com/en-us/windows/win32/api/iphlpapi/nf-iphlpapi-getadaptersaddresses.
+const (
+	GAA_FLAG_SKIP_UNICAST                = 0x1
+	GAA_FLAG_SKIP_ANYCAST                = 0x2
+	GAA_FLAG_SKIP_MULTICAST              = 0x4
+	GAA_FLAG_SKIP_DNS_SERVER             = 0x8
+	GAA_FLAG_INCLUDE_PREFIX              = 0x10
+	GAA_FLAG_SKIP_FRIENDLY_NAME          = 0x20
+	GAA_FLAG_INCLUDE_WINS_INFO           = 0x40
+	GAA_FLAG_INCLUDE_GATEWAYS            = 0x80
+	GAA_FLAG_INCLUDE_ALL_INTERFACES      = 0x100
+	GAA_FLAG_INCLUDE_ALL_COMPARTMENTS    = 0x200
+	GAA_FLAG_INCLUDE_TUNNEL_BINDINGORDER = 0x400
+)
 
 const (
 	IF_TYPE_OTHER              = 1