NextDNS in latest firmware?

I dont have an account with nextdns but this worked for me

cp /etc/stubby/stubby.yml /etc/stubby/stubby.yml.cloudflare

file info below /etc/stubby/stubby.yml below

resolution_type: GETDNS_RESOLUTION_STUB

dns_transport_list:
  - GETDNS_TRANSPORT_TLS

tls_authentication: GETDNS_AUTHENTICATION_REQUIRED

tls_query_padding_blocksize: 128

edns_client_subnet_private : 0

round_robin_upstreams: 0

idle_timeout: 10000

listen_addresses:
  - 127.0.0.1@53535
  -  0::1@53535

upstream_recursive_servers:
  - address_data: 45.90.28.0
    tls_auth_name: "6ffa65.dns1.nextdns.io"
  - address_data: 2a07:a8c0::0
    tls_auth_name: "6ffa65.dns1.nextdns.io"
  - address_data: 45.90.30.0
    tls_auth_name: "6ffa65.dns2.nextdns.io"
  - address_data: 2a07:a8c1::0
    tls_auth_name: "6ffa65.dns2.nextdns.io"

dont forget to
webadmin/more_settings/custom_dns_server/DNS over TLS from Cloudflare
disable, then apply
enablel, then apply

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