cloudflared proxy-dns --help indicates that it is possible:
--upstream value Upstream endpoint URL, you can specify multiple endpoints for redundancy. (default: "https://188.8.131.52/dns-query", "https://184.108.40.206/dns-query") (accepts multiple inputs) [$TUNNEL_DNS_UPSTREAM]
However it doesn’t state how. Is it
--upstream value value, or
--upstream value --upstream value, or
--upstream value,value, or some other thing.
And I assume for
$TUNNEL_DNS_UPSTREAM, that despite its name, because it was mentioned in the
proxy-dns --help it can be used to specify the upstream for
proxy-dns, and if so, does it support multiple endpoints? if so, how?