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net/dns: add debug envknob to enable dual stack MagicDNS

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Updates #15404

Change-Id: Ic754cc54113b1660b7071b40babb9d3c0e25b2e1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2025-03-24 09:08:20 -07:00
committed by Brad Fitzpatrick
parent 1ec1a60c10
commit a3bc0bcb0a
2 changed files with 24 additions and 5 deletions
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4
net/dns/manager.go
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@@ -307,7 +307,7 @@ func (m *Manager) compileConfig(cfg Config) (rcfg resolver.Config, ocfg OSConfig
// through quad-100.
rcfg.Routes = routes
rcfg.Routes["."] = cfg.DefaultResolvers
ocfg.Nameservers = []netip.Addr{cfg.serviceIP()}
ocfg.Nameservers = cfg.serviceIPs(m.knobs)
return rcfg, ocfg, nil
}
@@ -345,7 +345,7 @@ func (m *Manager) compileConfig(cfg Config) (rcfg resolver.Config, ocfg OSConfig
// or routes + MagicDNS, or just MagicDNS, or on an OS that cannot
// split-DNS. Install a split config pointing at quad-100.
rcfg.Routes = routes
ocfg.Nameservers = []netip.Addr{cfg.serviceIP()}
ocfg.Nameservers = cfg.serviceIPs(m.knobs)
var baseCfg *OSConfig // base config; non-nil if/when known