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net/dns: check if Manager.knobs isn't nil before using it

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Updates corp#15802

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
This commit is contained in:
Irbe Krumina 2024-06-07 15:35:43 +01:00
parent 0219317372
commit 8e1d46e54f
1 changed files with 3 additions and 0 deletions
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3
net/dns/manager.go
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@ -296,6 +296,9 @@ func (m *Manager) compileConfig(cfg Config) (rcfg resolver.Config, ocfg OSConfig
} }
func (m *Manager) disableSplitDNSOptimization() bool { func (m *Manager) disableSplitDNSOptimization() bool {
if m.knobs == nil {
return false
}
return m.knobs.DisableSplitDNSWhenNoCustomResolvers.Load() return m.knobs.DisableSplitDNSWhenNoCustomResolvers.Load()
} }