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net/dns: ignore permission errors on Synology DSM7 for now

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Updates #4017

Change-Id: Ia7fd4df47588c010dea8e63d88f397cc8eb748e5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2022-02-23 09:25:14 -08:00
committed by Brad Fitzpatrick
parent 29279b34fa
commit 7d897229d9
2 changed files with 34 additions and 4 deletions
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15
cmd/tailscaled/tailscaled.go
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@@ -475,7 +475,20 @@ func tryEngine(logf logger.Logf, linkMon *monitor.Mon, dialer *tsdial.Dialer, na
return nil, false, fmt.Errorf("createBIRDClient: %w", err)
}
}
if !useNetstack {
if useNetstack {
if runtime.GOOS == "linux" && distro.Get() == distro.Synology {
// On Synology in netstack mode, still init a DNS
// manager (directManager) to avoid the health check
// warnings in 'tailscale status' about DNS base
// configuration being unavailable (from the noop
// manager). More in Issue 4017.
// TODO(bradfitz): add a Synology-specific DNS manager.
conf.DNS, err = dns.NewOSConfigurator(logf, "") // empty interface name
if err != nil {
return nil, false, fmt.Errorf("dns.NewOSConfigurator: %w", err)
}
}
} else {
dev, devName, err := tstun.New(logf, name)
if err != nil {
tstun.Diagnose(logf, name)