hello. before, the assigned DNS IP address are being properly assigned to dialup customers, now that we have changed our IP block addresses, 10% of the dialup customers are still getting the OLD DNS IP addresses, which is wrong. i have checked all the routers and servers and did not found any devices that uses the OLD IP block nor the old DNS IP addresses. i have tried restarting routers, clearing DNS caches from DNS servers as well. i have tried testing different dns attributes like Client-DNS-Pri / Client-DNS-Pri pairs Ascend-Client-Primary-DNS / Ascend-Client-Secondary-DNS pairs i double checked name-servers declaration in the router level , what could it be? my resources says: freeradius-0.9.1-1 under FC2 would appreciate advises pls. thanks in advance. msn