diff --git a/interface.go b/interface.go
index 61b1f228..4f8f63c1 100644
--- a/interface.go
+++ b/interface.go
@@ -263,8 +263,6 @@ func (f *Interface) run() {
 }
 
 func (f *Interface) listenOut(i int) {
-	runtime.LockOSThread()
-
 	var li udp.Conn
 	if i > 0 {
 		li = f.writers[i]