At times, you may find that information gets stuck in Server Admin and can’t be removed. For example, you see a Zone in Server Admin, and it doesn’t have a Name Server record attached to it. You can’t delete it but every time you add a Name Server it just disappears. This is often caused when you remove or change something and it gets dumped from the zone files in /var/named but not from the BIND view. Running serveradmin will show the data but as it’s serialized it can’t be removed: serveradmin settings dns Without a Name Server record, the zone is unresponsive to queries. Removing the zone can delete the…
-
-
Sticky DHCP Leases in Mac OS X
I did an article some time ago about how DHCP leases work. From that, I’ve gotten a number of questions about why, after you click on Renew DHCP Lease in the Network System Preference pane, you sometimes see the information until you get a new lease. You can also reset the lease from the command line, which does not usually show you a new lease in the GUI immediately. To reset the DHCP lease from the command line, use ipconfig: ipconfig set en0 BOOTP ipconfig set en0 DHCP If the information is displayed on the screen, then it has to be stored somewhere, right? When your system sends an acceptance…