We're adding a new Win 2012 R2 member server to an existing SBS 2003 domain. It successfully joins the domain, but on successive reboots fails to id the network as a domain network and so it defaults to a "Public" network and fails to authenticate to the DC. On each reboot, in the Event Viewer, the NIC shows that it is "disconnected" and then 6 seconds later Netlogon reports that it can't find a DC. We've experimented with adding "Netman" as a service that Netlogon depends on, but have not had any luck. The NIC has the newest available driver.