wow
that is strange
so u have and at&t dsl setup westell wireless modem.router gateway thing>? do u have any device other that the dns 323 plugged in a port?
did u close the mac address into you westell?
r u using the dns as a dhcp server to a switch? feeding anything else
as far as dns=323 goes to me it look like u have to set the westell to give IP adress to more devices, if u have only 2 ip to lease out, then one of the other will not get the love.
i only allow 8 IP for my setup, for my laptops, mobiles, dsm-520, and desktops to everything else i have, with no lease time, they are all static and mac filtering locked, this way i dont' have to worry about security too much, no free wifi in my house