Add 6to4 tunnel support

git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@543 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb

Shorewall/firewall

@@ -95,7 +95,11 @@ error_message() # $* = Error Message
 fatal_error() # $* = Error Message
 {
     echo "   Error: $@" >&2
-    [ $command = check ] || stop_firewall
+    if [ $command = check ]; 
+	[ -n "$TMP_DIR" ] && rm -rf $TMP_DIR
+    else
+	stop_firewall
+    fi
     exit 2
 }
 
@@ -1130,6 +1134,9 @@ setup_tunnels() # $1 = name of tunnels file
 		gre|GRE)
 		    setup_one_other GRE $gateway 47
 		    ;;
+		6to4|6TO4)
+		    setup_one_other 6to4 $gateway 41
+		    ;;
 		pptpclient|PPTPCLIENT)
 		    setup_pptp_client $gateway
 		    ;;
@@ -4221,7 +4228,7 @@ delete_from_zone() # $1 = <interface>[:<hosts>] $2 = zone
 		qt iptables -D OUTPUT -o $interface -d $host -j $chain
 	    else
 		eval source_hosts=\"\$${z1}_hosts\"
-
+		
 		for h in $source_hosts; do
 		    iface=${h%:*}
 		    hosts=${h#*:}

Shorewall/tunnels

@@ -10,7 +10,7 @@
 #	The columns are:
 #
 #	TYPE	    --	must start in column 1 and be "ipsec", "ipsecnat","ip"
-#			"gre", "pptpclient", "pptpserver" or "openvpn".
+#			"gre", "6to4", "pptpclient", "pptpserver" or "openvpn".
 #
 #			If type is "openvpn", it may optionally be followed
 #			by ":" and the port number used by the tunnel. if no