Does UNAB use the DC locator service to discover the nearest AD domain controller ?
PIM 12.X and 14.X UNAB and PAM SC 14.X
Since it is a specific Windows service we can't use it as such, as UNAB is UNIX/Linux. Everything that is needed for UNAB operation is implemented independently from whatever is available on Windows
The following links describe the DC Locator service in detail: