Is there a way to only publish the IPv6 address of the router?
My current setup has IPv4 by CG-NAT, thous the router would not be reachable by the A record published by asuscomm.com
Using asuscomm.com I believe not. Some other DDNS services allow you to pick and choose the records you want to update/publish, but if you are not publishing your IPv4 address then it'll probably mean looking at a custom (but pretty simple) script.
I believe Hurricane Electric allows a degree of customization but to update your IPv6 you may find the need to use "curl -6" in your script which is often not considered good practice.
*Personally using Dynv6 as I can use a single call to update multiple hosts based on IPv6 prefix and device-MAC - though if you need certificates, that's still best done per device!
**If it wasn't for the bad grammar you'd think I was a chatbot!
*Personally using Dynv6 as I can use a single call to update multiple hosts based on IPv6 prefix and device-MAC - though if you need certificates, that's still best done per device!