How does your router support Route53?
Does your router have a static IP address and you just created an entry in Route53 mapping a subdomain.example.com to the static IP of your router?
DuckDNS is a Dynamic DNS and can work with common dynamic IPs...
How do you update the entry in Route53 when the IP address of your router changes?
OPNSense saves an AWS keypair. When it detects my IP changes, it updates a Route53 record using the AWS API. It’s one of the options alongside a bunch of other DDNS providers.
My router supports no-ip and other dyndns providers. I expect if that particular router supports Route 53 than it'll do the same: just update the entry in Route53.
