diff --git a/net/ddns-scripts/Makefile b/net/ddns-scripts/Makefile
index 0863b5656..fe634882d 100755
--- a/net/ddns-scripts/Makefile
+++ b/net/ddns-scripts/Makefile
@@ -12,7 +12,7 @@ PKG_NAME:=ddns-scripts
 PKG_VERSION:=2.7.8
 # Release == build
 # increase on changes of services files or tld_names.dat
-PKG_RELEASE:=16
+PKG_RELEASE:=17
 
 PKG_LICENSE:=GPL-2.0
 PKG_MAINTAINER:=
@@ -127,6 +127,21 @@ define Package/ddns-scripts_route53-v1/description
 	"option domain" to contain the hosted zone ID
 endef
 
+###### *************************************************************************
+define Package/ddns-scripts_cnkuai_cn
+    $(call Package/ddns-scripts/Default)
+    TITLE:=CnKuai API
+    DEPENDS:=ddns-scripts +curl +giflib-utils
+endef
+define Package/ddns-scripts_cnkuai_cn/description
+	Dynamic DNS Client scripts extension for CnKuai.Note: You
+	must also install giflib-utils.
+	It requires:
+	"option username" to be a valid CnKuai control panel id
+	"option password" to be the matching CnKuai control panel password
+	"option domain" to contain the domain
+endef
+
 ###### *************************************************************************
 define Build/Configure
 endef
@@ -436,6 +451,47 @@ define Package/ddns-scripts_route53-v1/prerm
 	exit 0	# suppress errors
 endef
 
+###### *************************************************************************
+define Package/ddns-scripts_cnkuai_cn/preinst
+	#!/bin/sh
+	# if NOT run buildroot then stop service
+	[ -z "$${IPKG_INSTROOT}" ] && /etc/init.d/ddns stop >/dev/null 2>&1
+	exit 0	# suppress errors
+endef
+define Package/ddns-scripts_cnkuai_cn/install
+	$(INSTALL_DIR) $(1)/etc/uci-defaults
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/files/ddns.defaults $(1)/etc/uci-defaults/ddns_cnkuai_cn
+	$(INSTALL_DIR) $(1)/usr/lib/ddns
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/files/update_cnkuai_cn.sh $(1)/usr/lib/ddns
+endef
+define Package/ddns-scripts_cnkuai_cn/postinst
+	#!/bin/sh
+	# remove old services file entries
+	/bin/sed -i '/cnkuai.cn/d' $${IPKG_INSTROOT}/etc/ddns/services		>/dev/null 2>&1
+	/bin/sed -i '/cnkuai.cn/d' $${IPKG_INSTROOT}/etc/ddns/services_ipv6	>/dev/null 2>&1
+	# and create new
+	printf "%s\\t%s\\n" '"cnkuai.cn"' '"update_cnkuai_cn.sh"' >> $${IPKG_INSTROOT}/etc/ddns/services
+	printf "%s\\t%s\\n" '"cnkuai.cn"' '"update_cnkuai_cn.sh"' >> $${IPKG_INSTROOT}/etc/ddns/services_ipv6
+	# on real system restart service if enabled
+	[ -z "$${IPKG_INSTROOT}" ] && {
+		[ -x /etc/uci-defaults/ddns_cnkuai_cn ] && \
+			/etc/uci-defaults/ddns_cnkuai_cn && \
+				rm -f /etc/uci-defaults/cnkuai.cn >/dev/null 2>&1
+		/etc/init.d/ddns enabled \
+			&& /etc/init.d/ddns start >/dev/null 2>&1
+	}
+	exit 0	# suppress errors
+endef
+define Package/ddns-scripts_cnkuai_cn/prerm
+	#!/bin/sh
+	# if NOT run buildroot then stop service
+	[ -z "$${IPKG_INSTROOT}" ] && /etc/init.d/ddns stop				>/dev/null 2>&1
+	# remove services file entries
+	/bin/sed -i 'cnkuai.cn/d' $${IPKG_INSTROOT}/etc/ddns/services		>/dev/null 2>&1
+	/bin/sed -i 'cnkuai.cn/d' $${IPKG_INSTROOT}/etc/ddns/services_ipv6	>/dev/null 2>&1
+	exit 0	# suppress errors
+endef
+
 ###### *************************************************************************
 $(eval $(call BuildPackage,ddns-scripts))
 $(eval $(call BuildPackage,ddns-scripts_cloudflare.com-v4))
@@ -444,3 +500,4 @@ $(eval $(call BuildPackage,ddns-scripts_godaddy.com-v1))
 $(eval $(call BuildPackage,ddns-scripts_no-ip_com))
 $(eval $(call BuildPackage,ddns-scripts_nsupdate))
 $(eval $(call BuildPackage,ddns-scripts_route53-v1))
+$(eval $(call BuildPackage,ddns-scripts_cnkuai_cn))
diff --git a/net/ddns-scripts/files/update_cnkuai_cn.sh b/net/ddns-scripts/files/update_cnkuai_cn.sh
new file mode 100755
index 000000000..a2b78630f
--- /dev/null
+++ b/net/ddns-scripts/files/update_cnkuai_cn.sh
@@ -0,0 +1,86 @@
+# inside url we need domain, username and password
+[ -z "$domain" ]   && write_log 14 "Service section not configured correctly! Missing 'domain'"
+[ -z "$username" ] && write_log 14 "Service section not configured correctly! Missing 'username'"
+[ -z "$password" ] && write_log 14 "Service section not configured correctly! Missing 'password'"
+
+local urlCp='http://cp.cnkuai.cn/'
+local urlLogin='http://cp.cnkuai.cn/userlogin.asp'
+local urlCaptcha='http://cp.cnkuai.cn/inc/image.asp'
+local urlDnsA='http://cp.cnkuai.cn/dns_a.asp'
+local urlDnsAAAA='http://cp.cnkuai.cn/dns_ipv6.asp'
+local urlDnsSave='http://cp.cnkuai.cn/dns_save.asp'
+
+getPixel(){
+  local filename=$1
+  local x=$(($2*3))
+  local y=$(($3*3))
+  local width=48
+
+  hexdump -s "$((x+width*y))" -n 3 -e '3/1 "%02X"' "$filename"
+}
+
+captchaChar(){
+  local filename=$1
+  local xoffset=$2
+
+  if [ "$(getPixel "$filename" $((xoffset+2)) 5)" = '000000' ]; then
+    echo '1'
+  elif [ "$(getPixel "$filename" $((xoffset+5)) 7)" = '000000' ]; then
+    echo '2'
+  elif [ "$(getPixel "$filename" $((xoffset+4)) 3)" = '000000' ]; then
+    echo '4'
+  elif [ "$(getPixel "$filename" $((xoffset+6)) 4)" = '000000' ]; then
+    echo '7'
+  elif [ "$(getPixel "$filename" $((xoffset+5)) 8)" = '000000' ]; then
+    echo '8'
+  elif [ "$(getPixel "$filename" $((xoffset+6)) 8)" = '000000' ]; then
+    echo '9'
+  elif [ "$(getPixel "$filename" $((xoffset+5)) 6)" = '000000' ]; then
+    echo '3'
+  elif [ "$(getPixel "$filename" $((xoffset+0)) 4)" = '000000' ]; then
+    echo '5'
+  elif [ "$(getPixel "$filename" $((xoffset+1)) 5)" = '000000' ]; then
+    echo '6'
+  else
+    echo '0'
+  fi
+}
+
+captcha(){
+  local str
+  str=$(captchaChar "$1" 9)
+  str=$str$(captchaChar "$1" 18)
+  str=$str$(captchaChar "$1" 26)
+  str=$str$(captchaChar "$1" 35)
+  echo "$str"
+}
+
+#clean
+rm /tmp/cnkuai.*
+#login to cnkuai dns cp
+curl -c '/tmp/cnkuai.cookiejar' "$urlCaptcha" | gif2rgb > /tmp/cnkuai.rgb || return 1
+yzm=$(captcha "/tmp/cnkuai.rgb")
+curl -b '/tmp/cnkuai.cookiejar' -c '/tmp/cnkuai.cookiejar' -H "Content-Type: application/x-www-form-urlencoded" -H "Referer: $urlCp" -d "userid=$URL_USER&password=$URL_PASS&yzm=$yzm&B1=%C8%B7%C8%CF%B5%C7%C2%BD&lx=0&userlx=3" -X POST "$urlLogin" > /dev/null || return 1
+
+if [ "$use_ipv6" -eq 0 ]; then
+  curl -b '/tmp/cnkuai.cookiejar' -c '/tmp/cnkuai.cookiejar' "$urlDnsA" > /tmp/cnkuai.html || return 1
+else
+  curl -b '/tmp/cnkuai.cookiejar' -c '/tmp/cnkuai.cookiejar' "$urlDnsAAAA" > /tmp/cnkuai.html || return 1
+fi
+local domainline
+domainline=$(awk "/<td>$domain<\/td>/{ print NR; exit }" /tmp/cnkuai.html)
+local domainid
+domainid=$(awk "NR==$((domainline+3))" /tmp/cnkuai.html | sed 's/^.*name=\x27domainid\x27 value="//g' | sed 's/".*$//g')
+local dnslistid
+dnslistid=$(awk "NR==$((domainline+3))" /tmp/cnkuai.html | sed 's/^.*name=\x27dnslistid\x27 value="//g' | sed 's/".*$//g')
+
+local data
+
+if [ "$use_ipv6" -eq 0 ]; then
+  data="T2=$__IP&T3=120&act=dns_a_edit&domainid=$domainid&dnslistid=$dnslistid&B1=%D0%DE%B8%C4"
+else
+  data="T2=$__IP&T3=120&act=dns_ipv6_edit&domainid=$domainid&dnslistid=$dnslistid&B1=%D0%DE%B8%C4"
+fi
+curl -b '/tmp/cnkuai.cookiejar' -c '/tmp/cnkuai.cookiejar' -H "Content-Type: application/x-www-form-urlencoded" -H "Referer: $urlDnsA" -d "$data" -X POST "$urlDnsSave" > /dev/null || return 1
+
+return 0