[openwrt/openwrt] ncm: add delegate option support

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/0371a4c8146d4f8239e03813e42f78d553178f8d

commit 0371a4c8146d4f8239e03813e42f78d553178f8d
Author: Chen Minqiang <ptpt52 at gmail.com>
AuthorDate: Wed May 15 22:46:08 2024 +0800

    ncm: add delegate option support
    
    Ipv6 delegate option is not respected by proto ncm
    this add support for it.
    
    Signed-off-by: Chen Minqiang <ptpt52 at gmail.com>
    Link: https://github.com/openwrt/openwrt/pull/15508
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 package/network/utils/comgt/files/ncm.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/package/network/utils/comgt/files/ncm.sh b/package/network/utils/comgt/files/ncm.sh
index 4c829fa930..e9412b28fe 100644
--- a/package/network/utils/comgt/files/ncm.sh
+++ b/package/network/utils/comgt/files/ncm.sh
@@ -20,6 +20,7 @@ proto_ncm_init_config() {
 	proto_config_add_string mode
 	proto_config_add_string pdptype
 	proto_config_add_boolean sourcefilter
+	proto_config_add_boolean delegate
 	proto_config_add_int profile
 	proto_config_add_defaults
 }
@@ -30,7 +31,7 @@ proto_ncm_setup() {
 	local manufacturer initialize setmode connect finalize devname devpath ifpath
 
 	local device ifname  apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
-	json_get_vars device ifname apn auth username password pincode delay mode pdptype sourcefilter profile $PROTO_DEFAULT_OPTIONS
+	json_get_vars device ifname apn auth username password pincode delay mode pdptype sourcefilter delegate profile $PROTO_DEFAULT_OPTIONS
 
 	local context_type
 
@@ -203,6 +204,7 @@ proto_ncm_setup() {
 		json_add_string ifname "@$interface"
 		json_add_string proto "dhcpv6"
 		json_add_string extendprefix 1
+		[ "$delegate" = "0" ] && json_add_boolean delegate "0"
 		[ "$sourcefilter" = "0" ] && json_add_boolean sourcefilter "0"
 		proto_add_dynamic_defaults
 		[ -n "$zone" ] && {