asuswrt merlin cloudflare ddns update

asuswrt-merlin-cloudflare-ddns-update.md

#!/bin/sh

# /jffs/scripts/ddns-start
 
zone=<zone_id>
record=<record_id>
token=<bearer_token>
fqdn=<fqdn>
myip=$(/usr/sbin/nvram get wan0_ipaddr)


payload=$(cat <<EOF
{
  "type":"A",
  "name":"$fqdn",
  "content":"$myip",
  "ttl":1,
  "proxied":false
}
EOF
)


curl -X PUT "https://api.cloudflare.com/client/v4/zones/$zone/dns_records/$record" \
     -H "Authorization: Bearer $token" \
     -H "Content-Type: application/json" \
     -d "$payload" \
     -s -f > /dev/null


if [ $? -eq 0 ]; then
    /sbin/ddns_custom_updated 1
else
    /sbin/ddns_custom_updated 0
fi