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tailscale/net/dns/resolver
Brad Fitzpatrick 3daf27eaad net/dns/resolver: fall back to IPv6 for well-known DoH servers if v4 fails
Should help with IPv6-only environments when the tailnet admin
only specified IPv4 DNS IPs.

See https://github.com/tailscale/tailscale/issues/2447#issuecomment-884188562

Co-Author: Adrian Dewhurst <adrian@tailscale.com>
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
..
doh_test.go net/dns/resolver: fall back to IPv6 for well-known DoH servers if v4 fails 4 years ago
forwarder.go net/dns/resolver: fall back to IPv6 for well-known DoH servers if v4 fails 4 years ago
macios_ext.go net/dns{,/resolver}: refactor DNS forwarder, send out of right link on macOS/iOS 5 years ago
neterr_darwin.go net/dns/resolver: permit larger max responses, signal truncation 5 years ago
neterr_other.go net/dns/resolver: fmt item 5 years ago
neterr_windows.go net/dns/resolver: permit larger max responses, signal truncation 5 years ago
tsdns.go net/dns{,/resolver}: quiet DNS output logging 4 years ago
tsdns_server_test.go net/dns/resolver: clamp EDNS size 5 years ago
tsdns_test.go net/dns/resolver: clamp EDNS size 5 years ago