Opening DoH 443/TCP without opening 443/UDP

[Dominic Preston via Unbound-users]

Hi, I have an Unbound resolver serving standard DNS over 53/UDP and 53/TCP.

It also serves DNS-over-HTTPS queries over 443/TCP by way of this
instruction:
interface: 2603:1c78:b7fa:b2df:8fad:3f52:0955:d930@443

In this configuration, standard DNS is still served over 443/UDP, despite
443/TCP not serving standard DNS. Is there any way to close 443/UDP without
disabling anything else or invoking a firewall rule?

Thanks,
Dominic.