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tsdns: dual resolution mode, IPv6 support (#526)

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This change adds to tsdns the ability to delegate lookups to upstream nameservers.
This is crucial for setting Magic DNS as the system resolver.

Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
This commit is contained in:
Dmytro Shynkevych
2020-07-07 15:25:32 -04:00
committed by GitHub
parent ce1b52bb71
commit 67ebba90e1
7 changed files with 555 additions and 257 deletions
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2
ipn/local.go
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@@ -467,7 +467,7 @@ func (b *LocalBackend) updateDNSMap(netMap *controlclient.NetworkMap) {
// Like PeerStatus.SimpleHostName()
domain = strings.TrimSuffix(domain, ".local")
domain = strings.TrimSuffix(domain, ".localdomain")
domain = domain + ".ipn.dev"
domain = domain + ".tailscale.us"
domainToIP[domain] = netaddr.IPFrom16(peer.Addresses[0].IP.Addr)
}
b.e.SetDNSMap(tsdns.NewMap(domainToIP))