DNS Stamp ipv6

Hello team,

I have one question.

My router need DNS stamp for use correctly the DNS, but if insert the dns stamp that nextdns public is only ipv4 and not ipv6.

I try with google/clodflare that are just configured on router and have ipv4 and ipv6 version.

Someone know if possible to create the ipv6 DNS stamp?

Thanks

Alien