As observed in the attached client TRACE log:
Line 4: IterationStartOperation invoked against 10.130.4.81:11222
Line 15: IterationStartOperation response received containing new server topology with members: [10.131.2.66:11222, 10.130.4.81:11222]; indicating removal of previous member: 10.131.2.65:11222
Line 28: Indicates removal of connections to server 10.131.2.65:11222 from pool Line 40: IterationEndOperation invoked against 10.130.4.81:11222
Line 44: IterationEndOperation response received
Line 253: NoRouteToHostException thrown for IterationStartOperation on server 10.131.2.65:11222
Line 352: NoRouteToHostException thrown for IterationStartOperation retry 1 on server 10.131.2.65:11222
...
Line 1046: NoRouteToHostException thrown for IterationStartOperation retry 10 on server 10.131.2.65:11222, which propagates back to the caller