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Brendan CreaneandGitHub 8eb18d902e net/dns/publicdns: use Control D anycast IPs for premium DoH (#20434 )

For dns.controld.com premium resolvers we synthesized per-resolver IPv6
addresses by encoding the resolver ID into the 2606:1a40::/48 range, but
those are legacy plaintext-DNS (port 53) endpoints that refuse TCP :443.
DoH now dials Control D's shared anycast IPs (the resolver ID stays in the
URL path), fixing SERVFAIL on IPv6-only/NAT64 networks where the v4
anycast fallback isn't reachable.

Fixes #20430

Signed-off-by: Brendan Creane <bcreane@gmail.com>

2026-07-13 16:47:23 -07:00

debug.go

all: remove AUTHORS file and references to it

2026-01-23 15:49:45 -08:00

doh_test.go

all: remove AUTHORS file and references to it

2026-01-23 15:49:45 -08:00

forwarder_test.go

net/dns/publicdns: use Control D anycast IPs for premium DoH (#20434 )

2026-07-13 16:47:23 -07:00

forwarder.go

all: fix typos where we repeat repeat ourselves