From: "Alex M" <radiussupport at lrcommunications dot net>
> So, I was regaining patch cables and was constantly unplugging power from
> mono box running wrap. At some point I lost connection to Inet, thought
> an IP or DNS issue, so did all release renew, then no luck then I even
> replaced all WRAP board still have the same problem. Then I went and
> figured out that mono doesn not register my client (laptop) in DHCP so
> technically my lap got ip whom who knows what, it can communicate with
> but no inet (well assuming now ARP tables where build) so I enabled my
> second wireless adapter and it got registred w/ DHCP and all work fine.
It sounds like the arp tables in your lan switches was corrupted, and so
dhcp stalled. When you get odd dhcp issues, reboot all the switches. Often
a "slow dhcp" is confused switches.