On 3 March 2010 09:53, Tony Mountifield <tony at softins.clara.co.uk> wrote: > In the OP's scenario, the DNS entries are updated by the DHCP server > when it grants a lease to a named client. The question is, what info > is the DHCP server receiving from Windows clients to enable this, > that his CentOS client is failing to send? Probably an active directory domain. Take a look at the samba net ads dns register command. Ben