ipv6-support: next iteration

* Introduce mode 6rd
* Introduce mode 6to4
* Fix announcement of DNS-Servers received from DHCPv6
* Fix some corner-cases in relaying behaviour

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34542 3c298f89-4303-0410-b956-a3cf2f4a3e73

4 files changed, 35 insertions, 12 deletions

diff --git a/package/network/ipv6/ipv6-support/Makefile b/package/network/ipv6/ipv6-support/Makefile
index 21d5c00f95..c921105c9e 100644
--- a/package/network/ipv6/ipv6-support/Makefile
+++ b/package/network/ipv6/ipv6-support/Makefile
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ipv6-support
-PKG_VERSION:=2012-12-03
+PKG_VERSION:=2012-12-06
 PKG_RELEASE:=1
 
 include $(INCLUDE_DIR)/package.mk
diff --git a/package/network/ipv6/ipv6-support/files/dhcpv6.sh b/package/network/ipv6/ipv6-support/files/dhcpv6.sh
index 1d19a681d4..b9428dd330 100755
--- a/package/network/ipv6/ipv6-support/files/dhcpv6.sh
+++ b/package/network/ipv6/ipv6-support/files/dhcpv6.sh
@@ -39,8 +39,9 @@ config_get prefix_fallback "$network" prefix_fallback
 
 local peerdns
 config_get_bool peerdns "$network" peerdns 0
-[ "peerdns" -eq "1" ] && {
+[ "$peerdns" -eq "1" ] && {
 	proto_init_update "*" 1
+	proto_set_keep 1
 	for server in $RDNSS; do
 		proto_add_dns_server "$server"
 	done
diff --git a/package/network/ipv6/ipv6-support/files/network6.config b/package/network/ipv6/ipv6-support/files/network6.config
index 4fc22d0fab..853918b22d 100644
--- a/package/network/ipv6/ipv6-support/files/network6.config
+++ b/package/network/ipv6/ipv6-support/files/network6.config
@@ -5,14 +5,8 @@ config interface wan
 	option prefix_fallback	relay
 	option peerdns		1	
 
-
 config interface lan
 	option mode		router
 	option advertise_prefix	64
 	option relay_master	wan
 
-
-config interface 6in4
-	option mode		static
-	list static_prefix	2001:DB8::/48
-
diff --git a/package/network/ipv6/ipv6-support/files/support.sh b/package/network/ipv6/ipv6-support/files/support.sh
index 479ed680a7..37173781a4 100644
--- a/package/network/ipv6/ipv6-support/files/support.sh
+++ b/package/network/ipv6/ipv6-support/files/support.sh
@@ -52,7 +52,6 @@ resolve_network_add() {
 	local __section="$1"
 	local __device="$2"
 	local __return="$3"
-
 	local __cdevice
 	network_get_device __cdevice "$__section"
 	[ "$__cdevice" != "$__device" ] && return
@@ -154,6 +153,10 @@ add_relay_slave() {
 	# Disable any active distribution
 	[ "$__cmode" == "router" ] && disable_router "$__section"
 
+	# Configure interface to accept RA and send RS
+	conf_set "$__device" accept_ra 2
+	conf_set "$__device" forwarding 2
+
 	eval "$__return"'="$'"$__return"' '"$__device"'"'
 }
 
@@ -286,8 +289,8 @@ enable_static() {
 		ula_prefix="fd$r1:$r2:$r3::/48"
 
 		# Save prefix so it will be preserved across reboots
-		uci set network6.$network.ula_prefix=$ula_prefix
-		uci commit network6
+		uci_set network6 "$network" ula_prefix "$ula_prefix"
+		uci_commit network6
 	}
 
 	# Announce ULA
@@ -313,10 +316,15 @@ enable_router() {
 
 	# Start RD & DHCPv6 service
 	local pid="/var/run/ipv6-router-$network.pid"
-	start_service "/usr/sbin/6relayd -Rserver -Dserver . $device" "$pid"
+
+	# Start server
+	start_service "/usr/sbin/6relayd -S . $device" "$pid"
 
 	# Try relaying if necessary
 	restart_master_relay "$network"
+
+	# start relay if there are forced relay members
+	restart_relay "$network"
 }
 
 
@@ -355,6 +363,25 @@ enable_dhcpv6() {
 }
 
 
+enable_6to4() {
+	local network="$1"
+	local device="$2"
+	local mode="$3"
+
+	local prefixlen="48"
+	[ "$mode" == "6rd" ] && {
+		local ip4prefix=$(uci_get network "$network" ip4prefixlen 0)
+		local ip6prefix=$(uci_get network "$network" ip6prefixlen 32)
+		prefixlen=$(($ip6prefix + 32 - $ip4prefix))
+	}
+
+	local prefix=""
+	network_get_ipaddr6 prefix "$network"
+
+	announce_prefix "$prefix/$prefixlen" "$network"
+}
+
+
 enable_interface()
 {
 	local network="$1"
@@ -370,5 +397,6 @@ enable_interface()
 	[ "$mode" == "dhcpv6" -o "$mode" == "static" ] && enable_static "$network" "$device"
 	[ "$mode" == "dhcpv6" ] && enable_dhcpv6 "$network" "$device"
 	[ "$mode" == "router" ] && enable_router "$network" "$device"
+	[ "$mode" == "6to4" -o "$mode" == "6rd" ] && enable_6to4 "$network" "$device" "$mode"
 	[ "$mode" == "relay" ] && restart_master_relay "$network" forced
 }