I am running Jenkins 1.570.

Occasionally out of the blue, a large chunk of my jenkins slaves will go offline and most importantly stay offline until Jenkins is rebooted. All of the slaves that go offline this way say the following as their reason why:

The current peer is reconnecting.

If I look in my Jenkins logs, I see this for some of my slaves that remain online:

Aug 07, 2014 11:13:07 AM INFO hudson.TcpSlaveAgentListener$ConnectionHandler run
Accepted connection #2018 from /172.16.100.79:51299
Aug 07, 2014 11:13:07 AM WARNING jenkins.slaves.JnlpSlaveHandshake error
TCP slave agent connection handler #2018 with /172.16.100.79:51299 is aborted: dev-build-03 is already connected to this master. Rejecting this connection.
Aug 07, 2014 11:13:07 AM WARNING jenkins.slaves.JnlpSlaveHandshake error
TCP slave agent connection handler #2018 with /172.16.100.79:51299 is aborted: Unrecognized name: dev-build-03

The logs are flooded with all of that, with another one coming in every second.

Lastly, there is one slave that is online still that should be offline. That slave is fully shut down, yet jenkins sees it as still fully online. All of the offline slaves are running Jenkins' slave.jar file in headless mode, so I can see the console output. All of them think that on their end they are "Online", but Jenkins itself has them all shut down.

This bug has been haunting me for quite a while now, and it is killing production for me. I really need to know if there's a fix for this, or at the very least, a version of jenkins I can downgrade to that doesn't have this issue.

Thank you!