I am currently setting up a Mac Server using 10.9.1 and have a client also on 10.9.1
When the client boots up I get a popup window next to the Username box that says "Network accounts unavailable" and I cannot login using any of the network accounts created on the server.
When I log into the client using a local user I can see and browse the servers file shares and when I go into System Preferences > Users & Groups > Login Options the Network Account Server is correct with a green light on it and if I go into the Allow network users to log in at login window it shows a list of network users on the client.
It seems the client can only see the server once logged in or network users don't have have permission to login. I have checked the server Users section and all users have Allow user to login ticked.
Any help would be appreciated.