We are using a pair of LM2000 balancers with Balancer Version 4.3-48. We have a few virtual services that currently contain one real server and use the ICMP Ping Real Server Check Protocol. The log is repeatedly reporting that the real server has been removed. This results in the virtual service being taken out of service. A few seconds later, the real server is added back to the virtual service followed by the virtual service reporting to be back in service. This only taking place with Virtual Services with a single Real Server. We have a number of Virtual Services with multiple Real Servers that are not reporting this issue.
An example of the System Message log follows:
Apr 1 13:34:42 LM1 l4d: Removing RS [x.x.x.x:80] from VS [x.x.x.x:80]
Apr 1 13:34:42 LM1 l4d: VS x.x.x.x:80 Taken out of service due to failed Real Servers
Apr 1 13:34:49 LM1 l4d: Adding RS [x.x.x.x:80] to VS [x.x.x.x:80]
Apr 1 13:34:49 LM1 l4d: VS x.x.x.x:80 Back in service