Mac OS X 10.4 Tiger: Roaming AirPort clients may lose IP address

If your Mac OS X 10.4 computer is connected to a network over AirPort and you roam from one wireless access point to another, your computer may lose its IP address without warning.

Update to Mac OS X 10.4.1 or later to resolve the issue.

If you are reading this article from another computer and need to force a 10.4 computer back online so that you can get the update, you have two workarounds available. The first is to put the computer to sleep and then wake it back up. The second is to force DHCP lease renewal by doing the following:

1. Open System Preferences.
2. Click the Network icon.
3. From the Show pop-up menu, choose AirPort.
4. Click the TCP/IP tab.
5. Click the Renew DHCP Lease button.

Note: On a roaming or WDS network, your computer may switch base stations without being relocated, due to variations in environmental factors.