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net/dns/resolver: remove deprecated 4via6 magic-dns formats (#20057)

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This removes deprecated magic-dns formats for 4via6 subnet routers.

These are superseded by the current format: Q-R-S-T-via-X.

Fixes #20053

Change-Id: I0eed1f057f856f248c4dc8ce3b751f6c7edcfbfd

Signed-off-by: Becky Pauley <becky@tailscale.com>
This commit is contained in:
BeckyPauley
2026-06-09 18:10:47 +01:00
committed by GitHub
parent 819f3ba7c1
commit 60b935e30f
2 changed files with 18 additions and 51 deletions
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net/dns/resolver/tsdns_test.go
+1 -5
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@@ -390,12 +390,8 @@ func TestResolveLocal(t *testing.T) {
{"ns-nxdomain", "test3.ipn.dev.", dns.TypeNS, netip.Addr{}, dns.RCodeNameError},
{"onion-domain", "footest.onion.", dns.TypeA, netip.Addr{}, dns.RCodeNameError},
{"magicdns", dnsSymbolicFQDN, dns.TypeA, netip.MustParseAddr("100.100.100.100"), dns.RCodeSuccess},
{"via_hex", dnsname.FQDN("via-0xff.1.2.3.4."), dns.TypeAAAA, netip.MustParseAddr("fd7a:115c:a1e0:b1a:0:ff:1.2.3.4"), dns.RCodeSuccess},
{"via_dec", dnsname.FQDN("via-1.10.0.0.1."), dns.TypeAAAA, netip.MustParseAddr("fd7a:115c:a1e0:b1a:0:1:10.0.0.1"), dns.RCodeSuccess},
{"x_via_hex", dnsname.FQDN("4.3.2.1.via-0xff."), dns.TypeAAAA, netip.MustParseAddr("fd7a:115c:a1e0:b1a:0:ff:4.3.2.1"), dns.RCodeSuccess},
{"x_via_dec", dnsname.FQDN("1.0.0.10.via-1."), dns.TypeAAAA, netip.MustParseAddr("fd7a:115c:a1e0:b1a:0:1:1.0.0.10"), dns.RCodeSuccess},
{"via_invalid", dnsname.FQDN("via-."), dns.TypeAAAA, netip.Addr{}, dns.RCodeRefused},
{"via_invalid_2", dnsname.FQDN("2.3.4.5.via-."), dns.TypeAAAA, netip.Addr{}, dns.RCodeRefused},
{"via_invalid_2", dnsname.FQDN("2-3-4-5-via-."), dns.TypeAAAA, netip.Addr{}, dns.RCodeRefused},
// Hyphenated 4via6 format.
// Without any suffix domain: