Cannot connect to domain controller - more detail needed

There needs to be more detail when a host controller can't connect to a domain controller. Several times we saw the "cannot connect to the domain controller" message when we knew the two servers could see each other. The host tried 5-6 times to connect then shut down. There were no other messages on the host or domain controller with more detail (even at DEBUG logging level). We could stop the domain controller while the host was trying to connect and we would see an immediate error message on the host.