From 1f9ebae0301ec01ce95e4c1944858b0be9641464 Mon Sep 17 00:00:00 2001
From: jow <jow@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 14 Oct 2012 09:17:14 +0000
Subject: [PATCH] 6in4: make local ip6addr optional

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33761 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/network/ipv6/6in4/Makefile      |  2 +-
 package/network/ipv6/6in4/files/6in4.sh | 14 ++++++++------
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/package/network/ipv6/6in4/Makefile b/package/network/ipv6/6in4/Makefile
index fdab29086..fcb0a7e75 100644
--- a/package/network/ipv6/6in4/Makefile
+++ b/package/network/ipv6/6in4/Makefile
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=6in4
-PKG_VERSION:=11
+PKG_VERSION:=12
 PKG_RELEASE:=1
 
 include $(INCLUDE_DIR)/package.mk
diff --git a/package/network/ipv6/6in4/files/6in4.sh b/package/network/ipv6/6in4/files/6in4.sh
index 71bc68940..651d7b97b 100755
--- a/package/network/ipv6/6in4/files/6in4.sh
+++ b/package/network/ipv6/6in4/files/6in4.sh
@@ -17,7 +17,7 @@ proto_6in4_setup() {
 	local mtu ttl ipaddr peeraddr ip6addr tunnelid username password
 	json_get_vars mtu ttl ipaddr peeraddr ip6addr tunnelid username password
 
-	[ -z "$ip6addr" -o -z "$peeraddr" ] && {
+	[ -z "$peeraddr" ] && {
 		proto_notify_error "$cfg" "MISSING_ADDRESS"
 		proto_block_restart "$cfg"
 		return
@@ -33,14 +33,16 @@ proto_6in4_setup() {
 		fi
 	}
 
-	local local6="${ip6addr%%/*}"
-	local mask6="${ip6addr##*/}"
-	[[ "$local6" = "$mask6" ]] && mask6=
-
 	proto_init_update "$link" 1
-	proto_add_ipv6_address "$local6" "$mask6"
 	proto_add_ipv6_route "::" 0
 
+	[ -n "$ip6addr" ] && {
+		local local6="${ip6addr%%/*}"
+		local mask6="${ip6addr##*/}"
+		[[ "$local6" = "$mask6" ]] && mask6=
+		proto_add_ipv6_address "$local6" "$mask6"
+	}
+
 	proto_add_tunnel
 	json_add_string mode sit
 	json_add_int mtu "${mtu:-1280}"