$NetBSD: patch-ae,v 1.2 2019/10/01 14:54:59 nia Exp $

Shell portability.

--- src/Unix/darwin/aratapif.sh.orig	2008-02-05 21:37:06.000000000 +0000
+++ src/Unix/darwin/aratapif.sh
@@ -25,7 +25,7 @@ DNSFWNATD_PORT=8669
 DNSFW_RULENUM=00100
 IPFW_RULENUM=00200
 
-if [ "$FW_INTERFACE" == "" ]
+if [ "$FW_INTERFACE" = "" ]
 then
 	ifconfig -u -a inet >/tmp/ifchk 2>/dev/null
 	
@@ -51,7 +51,7 @@ then
 	echo $FW_INTERFACE - $ADDR
 fi
 
-if [ "$NAMESERVER" == "" ]
+if [ "$NAMESERVER" = "" ]
 then
 	while read -r line
     do