[openwrt/openwrt] dnsmasq: add support for filter-AAAA/A

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/4979d16fb198c02a6f28a215c8827f98726824df

commit 4979d16fb198c02a6f28a215c8827f98726824df
Author: Chen Minqiang <ptpt52 at gmail.com>
AuthorDate: Mon Nov 7 16:20:15 2022 +0800

    dnsmasq: add support for filter-AAAA/A
    
    This add --filter-A and --filter-AAAA options, to remove IPv4 or IPv6
    addresses from DNS answers. these options is supported since version 2.87.
    
    Co-authored-by: NueXini <nuexini at alumni.tongji.edu.cn>
    Signed-off-by: Chen Minqiang <ptpt52 at gmail.com>
---
 package/network/services/dnsmasq/files/dhcp.conf    | 2 ++
 package/network/services/dnsmasq/files/dnsmasq.init | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/package/network/services/dnsmasq/files/dhcp.conf b/package/network/services/dnsmasq/files/dhcp.conf
index 8c42ef782e..4ddef172e6 100644
--- a/package/network/services/dnsmasq/files/dhcp.conf
+++ b/package/network/services/dnsmasq/files/dhcp.conf
@@ -21,6 +21,8 @@ config dnsmasq
 	#list bogusnxdomain     '64.94.110.11'
 	option localservice	1  # disable to allow DNS requests from non-local subnets
 	option ednspacket_max	1232
+	option filter_aaaa	0
+	option filter_a		0
 
 config dhcp lan
 	option interface	lan
diff --git a/package/network/services/dnsmasq/files/dnsmasq.init b/package/network/services/dnsmasq/files/dnsmasq.init
index 386b47616e..21910f5fd1 100755
--- a/package/network/services/dnsmasq/files/dnsmasq.init
+++ b/package/network/services/dnsmasq/files/dnsmasq.init
@@ -960,6 +960,9 @@ dnsmasq_start()
 	append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
 	append_bool "$cfg" scriptarp "--script-arp"
 
+	append_bool "$cfg" filter_aaaa "--filter-AAAA"
+	append_bool "$cfg" filter_a "--filter-A"
+
 	append_parm "$cfg" logfacility "--log-facility"
 	config_get logfacility "$cfg" "logfacility"
 	append_parm "$cfg" cachesize "--cache-size"