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tailcfg: add DNS address list for IsWireGuardOnly nodes

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Tailscale exit nodes provide DNS service over the peer API, however
IsWireGuardOnly nodes do not have a peer API, and instead need client
DNS parameters passed in their node description.

For Mullvad nodes this will contain the in network 10.64.0.1 address.

Updates #9377

Signed-off-by: James Tucker <james@tailscale.com>
This commit is contained in:
James Tucker
2023-09-14 10:04:31 -07:00
committed by James Tucker
parent 335a5aaf9a
commit e7727db553
9 changed files with 160 additions and 2 deletions
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4
tailcfg/tailcfg.go
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@ -336,6 +336,10 @@ type Node struct {
// is not expected to speak Disco or DERP, and it must have Endpoints in
// order to be reachable.
IsWireGuardOnly bool `json:",omitempty"`
// ExitNodeDNSResolvers is the list of DNS servers that should be used when this
// node is marked IsWireGuardOnly and being used as an exit node.
ExitNodeDNSResolvers []*dnstype.Resolver `json:",omitempty"`
}
// DisplayName returns the user-facing name for a node which should