Under the circumstance of the stateless service, the requester will no longer ask for where to send requests. When a new service instance is added or an old service instance is disintegrated, services will also no longer exchange states.
If you delete br_eth0 (the NIC of the L2 network that is connected to a host) of a host, reconnect these hosts, for all hosts in ZStack are stateless. Actually, no fixed configuration file is existed on the hardware of the host, but on the memory. After reconnection, regenerate the configuration file.