Moxi proxying to memcached, failover handling ?

Hi we have 1 single Moxi server instaled, proxying to 2 memcached servers (setup for testing purposes)

When we manually stop 1 memcached server, Moxi still tries to send writes to this stop (failed) server, and since the server is down, moxy sends "error writing to downstream proxy..." error - it sends this error to the client, and I would like to avoid Moxi sending this error, and transparently failover to the other server.

Is moxi transparent failover only working with couchabse clusters, or does it also works with a cluster of memcached servers, since I can not get it to work this way, without sending errors to client. It seems that Moxi backoff/blacklist feature is not working with plain memcached servers ?

We are using Moxi Server 1.8.

Thanks for any help.

Best