Hi * I am trying to get COA server running with 2.1.6. After downloading and successfully installing on Redhat Linux setup, I have not been able to get COA to work at all. After a lot of investigation, I have found a discrepency with the clients.conf file in the tar file I downloaded in 2.1.6 and a version I see on the -net. Specifically, the following lines are missing from the file in the tar file compared to an example I found on the web: # A pointer to the "home_server_pool" OR a "home_server" # section that contains the CoA configuration for this # client. For an example of a coa home server or pool, # see raddb/sites-available/originate-coa # coa_server = coa } After going through the C source code I see that this missing coa_server pointer is in fact referenced in the source code. I have now added this, but still I have issues. I originally commented out the coa pool because I don't want pools for now. SO, my problem is that even after adding the following line to my clients.conf file to match the pointer file to the example host_server config in originate-coa file,: coa_server = localhost-coa I still get the following error when I run radiusd -Xx : /usr/local/etc/raddb/clients.conf[30]: No such home_server or home_server_pool "localhost-coa" So now I uncomment the stuff to do the coa pool, and now I get the following debug output ### Loading Realms and Home Servers ###### : proxy server { [stuff] } home_server localhost { [stuff] } home_server_pool my_auth_failover { [stuff] } realm example.com { [stuff] } realm LOCAL { } /usr/local/etc/raddb/site-enabled/originate-coa[121]: home_server "localhost-coa" does not exist. Given the file discrepency I have already uncovered, I assume I must be missing something else but I cannot find out what. I appreciate any help as soon as possible. thanks. tony