This is SFT-1200 on firmware 4.3.7 (dec 2023) stable.
On my other glinet travel routers I use network>dns to force all to use encrypted dns provider NextDNS with my NextDNS ID (paid account).
Selecting “DNS over TLS” shows an orange triangle with a warning “uses v1 DNS” that only “some encrypted DNS servers are supported”
Where is documented which ones?
Manual DNS is not a great option as I use about a dozen different VPN profiles (different regions and providers). While each can be edited to one ipv4 DNS, and while there is a URL for updating associated VPN ipv4 address this is extremely not amusing.
I do not yet understand dnscryptproxy.