I have about 390 AAA Clients (cisco devices) in a Network Device Group. They all have multiple IP addresses. The AAA Clients were all entered with a carriage return in between addresses (with CSDBSync)
When trying to login to a router from any address other than the first address listed in ACS, the attempt fails with the error "Unkown NAS".
Also, if I create a "TACACS+ Default" AAA Client (*.*.*.*) I am able to login to any address on that device.