firewall: don't reload if there were no address or data changes

This fixes packet loss due to reloading firewall every minute with IPv6
implementation of certain ISPs.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39332 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/network/config/firewall/files/firewall.hotplug b/package/network/config/firewall/files/firewall.hotplug
index e34dc63..f1eab00 100644 (file)
--- a/package/network/config/firewall/files/firewall.hotplug
+++ b/package/network/config/firewall/files/firewall.hotplug
@@ -1,6 +1,7 @@
 #!/bin/sh
 
 [ "$ACTION" = ifup -o "$ACTION" = ifupdate ] || exit 0
+[ "$ACTION" = ifupdate -a -z "$IFUPDATE_ADDRESSES" -a -z "$IFUPDATE_DATA" ] && exit 0
 
 /etc/init.d/firewall enabled || exit 0