code review 97800043: go.net/ipv4: add support for dragonfly

ipv4/control_stub.go

 // Copyright 2012 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 dragonfly plan9 solaris
+// +build plan9 solaris
 
 package ipv4
 
 func setControlMessage(fd int, opt *rawOpt, cf ControlFlags, on bool) error {
         // TODO(mikio): Implement this
         return errOpNoSupport
 }
 
 func newControlMessage(opt *rawOpt) []byte {
         // TODO(mikio): Implement this
         return nil
 }
 
 func parseControlMessage(b []byte) (*ControlMessage, error) {
         // TODO(mikio): Implement this
         return nil, errOpNoSupport
 }
 
 func marshalControlMessage(cm *ControlMessage) []byte {
         // TODO(mikio): Implement this
         return nil
 }