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DoHEndpointFromIP mapped the entire 2606:1a40::/48 range to a dns.controld.com/<id> DoH URL, but the ID-encoded addresses in that range are legacy plaintext-DNS endpoints that refuse :443. They now fall through as ordinary port-53 resolvers; the free anycast freedns.controld.com/pN addresses still upgrade via exact match. Fixes #20433 Signed-off-by: Brendan Creane <bcreane@gmail.com>