--- /dev/null
+// Copyright 2014 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.
+
+// +build !darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv4
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{}
+
+ sockOpts = map[int]*sockOpt{}
+)