We have a wireless network with a mixture of Motorola Canopy and Tranzeo gear. We had occasional DHCP problems in past which seem to have been cured when we upgraded to 2.8.19 a few weeks ago. In the last five days we upgraded to 2.8.22 for the Hotmail fix and I'm beginning to think that the DHCP problem has returned. Since then approximately 15% of my clients have called with access problems. Having them release and renew the IP manually seems to fix it. Seems to be just WinXP, but possibly that's just because it is now the predominant O/S we see. I'm hoping this only needs to be done once per client and that it won't be continual. Anybody else seeing this with 2.8.22?
I think the problem was actually a rogue DHCP server on my network. I shut it down and the problems went away. It gave some weird results, like DNS address would be that of the rogue server's IP but the client IP would come from the Mikrotik.