From 64f992524559dae48b46cc102fb0f5955e238305 Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jow@openwrt.org>
Date: Tue, 19 Oct 2010 02:07:29 +0000
Subject: [PATCH] 6in4: - add log entries for update operations - always update
 tunnel, even if wan ip is unchanged - use multiple wget tries before giving
 up, resolv.conf might not be ready when ifup is triggered

SVN-Revision: 23528
---
 package/6in4/Makefile           |  2 +-
 package/6in4/files/6in4.hotplug | 21 +++++++++++++++++----
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/package/6in4/Makefile b/package/6in4/Makefile
index 1f0573b97ad4..d03d2396ffa3 100644
--- a/package/6in4/Makefile
+++ b/package/6in4/Makefile
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=6in4
-PKG_VERSION:=6
+PKG_VERSION:=7
 PKG_RELEASE:=1
 
 include $(INCLUDE_DIR)/package.mk
diff --git a/package/6in4/files/6in4.hotplug b/package/6in4/files/6in4.hotplug
index 534682e99a15..9499296d92c2 100644
--- a/package/6in4/files/6in4.hotplug
+++ b/package/6in4/files/6in4.hotplug
@@ -17,11 +17,9 @@ if [ "$ACTION" = ifup ]; then
 		config_get wandev "$cfg" wan_device "$(find_6in4_wanif)"
 		[ "$wandev" = "$DEVICE" ] || return 0
 
-		local oldip
 		local wanip=$(find_6in4_wanip "$wandev")
-		config_get oldip "$cfg" ipaddr
 
-		[ -n "$wanip" ] && [ "$oldip" != "$wanip" ] && {
+		[ -n "$wanip" ] && {
 			local tunnelid
 			config_get tunnelid "$cfg" tunnelid
 
@@ -37,7 +35,22 @@ if [ "$ACTION" = ifup ]; then
 				}
 				uci_set_state network "$cfg" ipaddr "$wanip"
 
-				( wget -qO/dev/null "http://ipv4.tunnelbroker.net/ipv4_end.php?ipv4b=AUTO&user_id=$username&pass=$password&tunnel_id=$tunnelid" && ifup "$cfg" )&
+				(
+					local url="http://ipv4.tunnelbroker.net/ipv4_end.php?ipv4b=AUTO&user_id=$username&pass=$password&tunnel_id=$tunnelid"
+					local try=0
+					local max=3
+
+					while [ $((++try)) -le $max ]; do
+						wget -qO/dev/null "$url" 2>/dev/null && {
+							logger -t 6in4-update "Updated tunnel #$tunnelid endpoint to $wanip"
+							ifup "$cfg"
+							break
+						} || {
+							logger -t 6in4-update "Try $try/$max failed, retrying"
+							sleep 1
+						}
+					done
+				)&
 			}
 		}
 	}
-- 
2.30.2