I have two forward IP in options block: Options { .... forwarders { 192.10.1.32;192.20.12.14; }; }; How does these two IP being use, Round robin or always send to 192.10.1.32 unless does not get answer from 192.10.1.32. then it will forward to 192.20.12.14 Thanks Kevin Situ FISC-T Network System