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net/dns: work around new NetworkManager in other selection paths.

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Further bits of #1788

Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson 2021-04-23 22:09:00 -07:00
parent 25ce9885a2
commit f6b7d08aea
1 changed files with 24 additions and 4 deletions
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28
net/dns/manager_linux.go
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@ -97,11 +97,22 @@ func NewOSConfigurator(logf logger.Logf, interfaceName string) (ret OSConfigurat
dbg("src-is-nm", "yes")
if err := dbusPing("org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager/DnsManager"); err == nil {
dbg("nm", "yes")
return newNMManager(interfaceName)
old, err := nmVersionOlderThan("1.26.6")
if err != nil {
return nil, fmt.Errorf("checking NetworkManager version: %v", err)
}
if old {
dbg("nm-old", "yes")
return newNMManager(interfaceName)
} else {
dbg("nm-old", "no")
}
} else {
dbg("nm", "no")
}
dbg("nm", "no")
} else {
dbg("src-is-nm", "no")
}
dbg("src-is-nm", "no")
if _, err := exec.LookPath("resolvconf"); err != nil {
dbg("resolvconf", "no")
return newDirectManager()
@ -115,7 +126,16 @@ func NewOSConfigurator(logf logger.Logf, interfaceName string) (ret OSConfigurat
return newDirectManager()
}
dbg("nm", "yes")
return newNMManager(interfaceName)
old, err := nmVersionOlderThan("1.26.6")
if err != nil {
return nil, fmt.Errorf("checking NetworkManager version: %v", err)
}
if old {
dbg("nm-old", "yes")
return newNMManager(interfaceName)
}
dbg("nm-old", "no")
return newDirectManager()
default:
dbg("rc", "unknown")
return newDirectManager()