diff --git a/src/net/dial.go b/src/net/dial.go
index 763096d9e..a1cb75d87 100644
--- a/src/net/dial.go
+++ b/src/net/dial.go
@@ -8,6 +8,7 @@ import (
 type Dialer struct {
 	Timeout   time.Duration
 	Deadline  time.Time
+	DualStack bool
 	KeepAlive time.Duration
 }
 
diff --git a/src/os/file_go_other.go b/src/os/file_go_other.go
index d8d680ffe..351de7acc 100644
--- a/src/os/file_go_other.go
+++ b/src/os/file_go_other.go
@@ -44,3 +44,8 @@ const (
 func (m FileMode) IsDir() bool {
 	return false
 }
+
+// IsRegular is a stub, always returning false
+func (m FileMode) IsRegular() bool {
+	return false
+}