Obvious, isn't it?

dslite.sh.diff

*** dslite.sh.orig	2019-09-13 16:50:15.182508583 +0900
--- dslite.sh	2019-09-13 16:51:34.557074668 +0900
***************
*** 1,3 ****
--- 1,4 ----
+ 
  #!/bin/sh
  # dslite.sh - IPv4-in-IPv6 tunnel backend
  # Copyright (c) 2013 OpenWrt.org
*************** proto_dslite_setup() {
*** 15,22 ****
  	local link="ds-$cfg"
  	local remoteip6
  
! 	local mtu ttl peeraddr ip6addr tunlink zone weakif encaplimit
! 	json_get_vars mtu ttl peeraddr ip6addr tunlink zone weakif encaplimit
  
  	[ -z "$peeraddr" ] && {
  		proto_notify_error "$cfg" "MISSING_ADDRESS"
--- 16,23 ----
  	local link="ds-$cfg"
  	local remoteip6
  
! 	local mtu ttl peeraddr ip6addr tunlink zone weakif encaplimit ipaddr netmask
! 	json_get_vars mtu ttl peeraddr ip6addr tunlink zone weakif encaplimit ipaddr netmask
  
  	[ -z "$peeraddr" ] && {
  		proto_notify_error "$cfg" "MISSING_ADDRESS"
*************** proto_dslite_setup() {
*** 59,87 ****
  
  	proto_init_update "$link" 1
  	proto_add_ipv4_route "0.0.0.0" 0
! 	proto_add_ipv4_address "192.0.0.2" "" "" "192.0.0.1"
  
  	proto_add_tunnel
  	json_add_string mode ipip6
! 	json_add_int mtu "${mtu:-1280}"
  	json_add_int ttl "${ttl:-64}"
  	json_add_string local "$ip6addr"
  	json_add_string remote "$peeraddr"
  	[ -n "$tunlink" ] && json_add_string link "$tunlink"
  	json_add_object "data"
! 	  [ -n "$encaplimit" ] && json_add_string encaplimit "$encaplimit"
  	json_close_object
  	proto_close_tunnel
  
  	proto_add_data
! 	[ -n "$zone" ] && json_add_string zone "$zone"
  
! 	json_add_array firewall
! 	  json_add_object ""
! 	    json_add_string type nat
! 	    json_add_string target ACCEPT
! 	  json_close_object
! 	json_close_array
  	proto_close_data
  
  	proto_send_update "$cfg"
--- 60,88 ----
  
  	proto_init_update "$link" 1
  	proto_add_ipv4_route "0.0.0.0" 0
! 	[ -n "$ipaddr" ] && proto_add_ipv4_address "$ipaddr" "${netmask:-255.255.255.255}" "" ""
  
  	proto_add_tunnel
  	json_add_string mode ipip6
! 	json_add_int mtu "${mtu:-1460}"
  	json_add_int ttl "${ttl:-64}"
  	json_add_string local "$ip6addr"
  	json_add_string remote "$peeraddr"
  	[ -n "$tunlink" ] && json_add_string link "$tunlink"
  	json_add_object "data"
! 	  json_add_string encaplimit "${encaplimit:-ignore}"
  	json_close_object
  	proto_close_tunnel
  
  	proto_add_data
! 	json_add_string zone "${zone:-wan}"
  
! 	#json_add_array firewall
! 	#  json_add_object ""
! 	#    json_add_string type nat
! 	#    json_add_string target ACCEPT
! 	#  json_close_object
! 	#json_close_array
  	proto_close_data
  
  	proto_send_update "$cfg"
*************** proto_dslite_init_config() {
*** 103,110 ****
--- 104,114 ----
  	proto_config_add_string "encaplimit"
  	proto_config_add_string "zone"
  	proto_config_add_string "weakif"
+ 	proto_config_add_string "ipaddr"
+ 	proto_config_add_string "netmask"
  }
  
  [ -n "$INCLUDE_ONLY" ] || {
          add_protocol dslite
  }
+