I have AIX (5.3 TL5 SP4) workstations that use DHCP. The DHCP server is a Windows server running MS DHCP. Nothing fancy.
When Windows clients shut down, their IP address remains reserved as long as their lease time has not expired (you can still nslookup that host name and get an IP address back). On the AIX clients, however, as soon as dhcpcd is stopped, the IP address is immediately unregistered, so the host name becomes unknown to the network. I have so far been unable to figure out how to change this behavior.
Any suggestions?