--- libgo/go/net/cgo_sockold.go.orig	2020-03-04 19:30:03.000000000 +1100
+++ libgo/go/net/cgo_sockold.go	2020-09-08 13:24:40.239112000 +1000
@@ -3,7 +3,7 @@
 // license that can be found in the LICENSE file.
 
 // +build cgo,!netgo
-// +build aix darwin dragonfly freebsd netbsd openbsd
+// +build aix bsdsunix darwin dragonfly freebsd netbsd openbsd
 
 package net