Is dns0.eu DoH supported

RouterOS General
1

Is DNS0.eu compatible with RouterOS? Since it is created by the co-founders of NextDNS I assumed so. But I can't get it working using https://www.dns0.eu domain together with www-dns0-eu.pem.

/certificate import file-name=www-dns0-eu.pem trusted=yes

/ip dns set use-doh-server=https://dns0.eu verify-doh-cert=yes

/certificate print detail 
  Flags: K - private-key; L - crl; C - smart-card-key; A - authority; I - issued, R - revoked; E - expired; T - trusted 
   0  L    T name="www-dns0-eu.pem" digest-algorithm=sha256 trusted=yes common-name="www.dns0.eu" 
             subject-alt-name=DNS:www.dns0.eu issuer=C=US,O=Let's Encrypt,CN=R10 key-type=rsa key-size=2048 
             key-usage=digital-signature,key-encipherment,tls-server,tls-client days-valid=89 
             invalid-before=2025-07-26 13:12:14 invalid-after=2025-10-24 13:12:13 
             serial-number="06be6cdfe5a38a737cf3da0ae0b6209cff25" akid=bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8 
             skid=e74ab6ff7143ee66298efdcc02809c5f56d42ef6 
             fingerprint="0bba282e95246ca8a3f32510448da830a7519bfa9c2996e322daa890a2dca76b" expires-after=4w4d22h25m2s

https://www.dns0.eu

2

It's probably using HTTP/2, which RouterOS does not support. See this other thread Malfunctioning European DoH servers.

3

That is problematic.
Yes they might be, I can see they also have a DNS‑over‑HTTP/3 option.

4

Is simply DoQ (DNS ove QUIC)