Version 4.0.6-GIT-9bfcb9f openSUSE 12.3 client with 3.6.12 Hi I've a problem with a Linux box joined to a domain which sometimes can't connect. Login, kinit fail. The DC doesn't recognise it. I've traced this to (almost certainly) DNS. When it's 192.168.1.21 it's fine. Maybe it was .21 when it first joined? The other Linux boxes work fine whatever DHCP gives them. I've worked around it by giving it a static ip and setting the DHCP range from 22 up but it would be better if I could find out why it is the one box which is problematic. I've tried both Winbind and sssd on the client with the same results. Where would I start to debug this? Cheers, Steve