newServer {address="2001:4860:4860::8888", qps=1}
newServer {address="2001:4860:4860::8844", qps=1} 
newServer {address="2620:0:ccc::2", qps=10}
newServer {address="2620:0:ccd::2", qps=10}
newServer("192.168.1.2")
setServerPolicy(firstAvailable) -- first server within its QPS limit