--- configure.upstream.orig	2018-07-10 09:55:14.000000000 -0400
+++ configure.upstream	2018-09-17 23:16:11.526879000 -0400
@@ -6440,7 +6440,7 @@
             ;;
       esac
       ;;
-  *486-*-bsdi* | *-netbsd* | *-freebsd* | *-apple-darwin* | *-dec-osf* | *-qnx)
+  *486-*-bsdi* | *-netbsd* | *-bsdsunix* | *-freebsd* | *-apple-darwin* | *-dec-osf* | *-qnx)
 
   test "x$silent" != "xyes" && echo "  forcing SINGLE_LISTEN_UNSERIALIZED_ACCEPT to \"1\""
   SINGLE_LISTEN_UNSERIALIZED_ACCEPT="1"
@@ -39133,7 +39133,7 @@
     *freebsd[1234].*)
         v4mapped=yes
         ;;
-    *freebsd*|*netbsd*|*openbsd*)
+    *bsdsunix*|*freebsd*|*netbsd*|*openbsd*)
         v4mapped=no
         ;;
     *)