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tailcfg, ipn/ipnlocal, net/dns: forward exit node DNS on Unix to system DNS

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Updates #1713

Change-Id: I4c073fec0992d9e01a9a4ce97087d5af0efdc68d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2021-11-29 14:18:09 -08:00
committed by Brad Fitzpatrick
parent d9c21936c3
commit 135580a5a8
7 changed files with 251 additions and 57 deletions
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15
tailcfg/tailcfg.go
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@@ -907,6 +907,21 @@ type DNSConfig struct {
// ExtraRecords contains extra DNS records to add to the
// MagicDNS config.
ExtraRecords []DNSRecord `json:",omitempty"`
// ExitNodeFilteredSuffixes are the the DNS suffixes that the
// node, when being an exit node DNS proxy, should not answer.
//
// The entries do not contain trailing periods and are always
// all lowercase.
//
// If an entry starts with a period, it's a suffix match (but
// suffix ".a.b" doesn't match "a.b"; a prefix is required).
//
// If an entry does not start with a period, it's an exact
// match.
//
// Matches are case insensitive.
ExitNodeFilteredSet []string
}
// DNSRecord is an extra DNS record to add to MagicDNS.