odhcp6c: add noserverunicast config option for broken DHCPv6 servers

Fix broken DHCPv6 servers which provide the server unicast option but
do not reply on DHCPv6 renew messages directed to the IPv6 address
contained in the server unicast option whihc results in broken IPv6
connectivity.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

package/network/ipv6/odhcp6c/Makefile

@@ -8,13 +8,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=odhcp6c
-PKG_RELEASE:=13
+PKG_RELEASE:=14
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/odhcp6c.git
-PKG_SOURCE_DATE:=2018-06-20
-PKG_SOURCE_VERSION:=b99c1f63b6e1897de84e0a9dc420a240271fb70c
-PKG_MIRROR_HASH:=d32fb6c851d276a75f6ed72593bda2329312e84961a5730298c9f31b169719bd
+PKG_SOURCE_DATE:=2018-07-14
+PKG_SOURCE_VERSION:=67ae6a71b5762292e114b281d0e329cc24209ae6
+PKG_MIRROR_HASH:=176b637b3856af0d6bb9c526afbddca4e569ea056fc36fc026345e7e22a6cef5
 PKG_MAINTAINER:=Hans Dedecker <dedeckeh@gmail.com>
 PKG_LICENSE:=GPL-2.0
 

package/network/ipv6/odhcp6c/files/dhcpv6.sh

@@ -16,6 +16,7 @@ proto_dhcpv6_init_config() {
 	proto_config_add_string 'forceprefix:bool'
 	proto_config_add_string 'extendprefix:bool'
 	proto_config_add_string 'norelease:bool'
+	proto_config_add_string 'noserverunicast:bool'
 	proto_config_add_array 'ip6prefix:list(ip6addr)'
 	proto_config_add_string iface_dslite
 	proto_config_add_string zone_dslite
@@ -50,8 +51,8 @@ proto_dhcpv6_setup() {
 	local config="$1"
 	local iface="$2"
 
-	local reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease ip6prefix ip6prefixes iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass sendopts delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff
-	json_get_vars reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff
+	local reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease noserverunicast ip6prefix ip6prefixes iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass sendopts delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff
+	json_get_vars reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease noserverunicast iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff
 	json_for_each_item proto_dhcpv6_add_prefix ip6prefix ip6prefixes
 
 	# Configure
@@ -71,6 +72,8 @@ proto_dhcpv6_setup() {
 
 	[ "$norelease" = "1" ] && append opts "-k"
 
+	[ "$noserverunicast" = "1" ] && append opts "-U"
+
 	[ -n "$ifaceid" ] && append opts "-i$ifaceid"
 
 	[ -n "$vendorclass" ] && append opts "-V$vendorclass"