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net/dns: bound time we wait on restarting systemd-resolved in another place

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Fixes #3629
Updates #3537

Change-Id: I5d4b6acfcfdf0e3efcf6eb49c5e6cf4521e4baed
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-12-28 09:58:57 -08:00 committed by Brad Fitzpatrick
parent 44937b59e7
commit eb26c081b1
1 changed files with 8 additions and 1 deletions
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9
net/dns/direct.go
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@ -344,7 +344,14 @@ func (m *directManager) SetDNS(config OSConfig) (err error) {
// cause a disruptive DNS outage each time we reset an empty
// OS configuration.
if changed && isResolvedRunning() && !runningAsGUIDesktopUser() {
exec.Command("systemctl", "restart", "systemd-resolved.service").Run()
t0 := time.Now()
err := restartResolved()
d := time.Since(t0).Round(time.Millisecond)
if err != nil {
m.logf("error restarting resolved after %v: %v", d, err)
} else {
m.logf("restarted resolved after %v", d)
}
}
return nil