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net/dns/resolver: support magic resolution of via-<siteid>.<ip4> domains

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Updates #3616

Signed-off-by: Tom DNetto <tom@tailscale.com>
This commit is contained in:
Tom DNetto
2022-04-21 14:13:13 -07:00
committed by Tom
parent 910ae68e0b
commit 78fededaa5
2 changed files with 48 additions and 0 deletions
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3
net/dns/resolver/tsdns_test.go
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@ -348,6 +348,9 @@ func TestResolveLocal(t *testing.T) {
{"ns-nxdomain", "test3.ipn.dev.", dns.TypeNS, netaddr.IP{}, dns.RCodeNameError},
{"onion-domain", "footest.onion.", dns.TypeA, netaddr.IP{}, dns.RCodeNameError},
{"magicdns", dnsSymbolicFQDN, dns.TypeA, netaddr.MustParseIP("100.100.100.100"), dns.RCodeSuccess},
{"via_hex", dnsname.FQDN("via-0xff.1.2.3.4."), dns.TypeAAAA, netaddr.MustParseIP("fd7a:115c:a1e0:b1a:0:ff:102:304"), dns.RCodeSuccess},
{"via_dec", dnsname.FQDN("via-1.10.0.0.1."), dns.TypeAAAA, netaddr.MustParseIP("fd7a:115c:a1e0:b1a:0:1:a00:1"), dns.RCodeSuccess},
{"via_invalid", dnsname.FQDN("via-."), dns.TypeA, netaddr.IP{}, dns.RCodeRefused},
}
for _, tt := range tests {