ReadyNAS Replicate: "Connect error code: -51" since firmware update to 6.4.2

I am suffering from this issue, as well, but I do not believe that it is associated with a firmware update.

I updated my two units to 4.2.28 on December 6, and Replicate continued to complete successfully for another two months.

Sun Dec 6 14:06:50 EST 2015   System Update Status (LABNAS) : Your ReadyNAS device has been updated with a new firmware image. (RAIDiator-x86 4.2.28)

Sun Dec 6 14:13:52 EST 2015   System Update Status (BKUPNAS) : Your ReadyNAS device has been updated with a new firmware image. (RAIDiator-x86 4.2.28)

Through February 16, my logs typicially look like this:

[2016-02-16 02:00:02] [Info] Job updated from server

[2016-02-16 02:00:02] [Info] Replicate version: 1.2.0 build R1

[2016-02-16 02:00:02] [Info] Starting backup job "System Backup [2014-02-19 04:30 PM]"

[2016-02-16 02:00:02] [Info] Locking target folder: /c/System Backup [2014-02-19 04:30 PM]

[2016-02-16 02:00:04] [Info] Resume folder is "/c/System Backup [2014-02-19 04:30 PM]/2016-02-15 02-00/data"

[2016-02-16 02:03:12] [Info] p2p connect to LABNAS in 2819143 network

[2016-02-16 02:05:49] [Info] Connection method: 5

[2016-02-16 02:05:49] [Warning] Using a relayed connection, consider setting up port forwarding

[2016-02-16 02:05:49] [Info] LAN connection not available

[2016-02-16 02:05:49] [Info] Using p2p connection

[2016-02-16 02:05:49] [Info] Initializing source device

[2016-02-16 02:05:49] [Info] Sending task to source device

[2016-02-16 02:05:51] [Info] Awaiting task report

[2016-02-16 02:05:53] [Info] Received success report

[2016-02-16 02:05:53] [Warning] Snapshot is not requested

[2016-02-16 02:05:53] [Warning] Backup could be inconsistent

[2016-02-16 02:05:53] [Info] Device initialization finished

[2016-02-16 02:05:53] [Info] Starting system config backup

[2016-02-16 02:05:53] [Info] Sending task to source device

[2016-02-16 02:05:56] [Info] Awaiting task report

[2016-02-16 02:06:09] [Info] Received success report

[2016-02-16 02:06:09] [Info] Copy in progress

[2016-02-16 02:13:03] [Info] Copy finished

[2016-02-16 02:13:03] [Info] Deinitialize source device

[2016-02-16 02:13:03] [Info] Sending task to source device

[2016-02-16 02:13:06] [Info] Awaiting task report

[2016-02-16 02:13:08] [Info] Received success report

[2016-02-16 02:13:08] [Info] Device deinitialization finished

[2016-02-16 02:13:08] [Info] p2p disconnect with LABNAS in 2819143 network

[2016-02-16 02:13:09] [Info] Unlock target folder: /c/System Backup [2014-02-19 04:30 PM]

[2016-02-16 02:13:09] [Info] Job finished

    Files copied:

    ...

Summary:

    Copy start time: 2016-02-16 02:06

    Total files processed: 507972

    Total files transferred: 6

    Total files size: 2.51 TB

    Total files size transferred: 91.40 MB

    Average speed: 225.52 KB/s

    Exit code: 0 (Ok)

    Copy end time: 2016-02-16 02:13

Beginning on February 17, they all resemble this:

[2016-02-17 02:00:03] [Info] Job updated from server

[2016-02-17 02:00:04] [Info] Replicate version: 1.2.0 build R1

[2016-02-17 02:00:04] [Info] Starting backup job "System Backup [2014-02-19 04:30 PM]"

[2016-02-17 02:00:04] [Info] Locking target folder: /c/System Backup [2014-02-19 04:30 PM]

[2016-02-17 02:00:06] [Info] Resume folder is "/c/System Backup [2014-02-19 04:30 PM]/2016-02-16 02-00/data"

[2016-02-17 02:03:24] [Info] p2p connect to LABNAS in 2819143 network

[2016-02-17 02:03:46] [Info] p2p connect to LABNAS in 2819143 network

[2016-02-17 02:03:58] [Error] Unable to connect to LABNAS

[2016-02-17 02:03:58] [Error] Connect error code: -51

[2016-02-17 02:03:58] [Error] Please check source device is online and Replicate service is running

[2016-02-17 02:03:58] [Info] Unlock target folder: /c/System Backup [2014-02-19 04:30 PM]

[2016-02-17 02:03:58] [Info] Job finished

I do not believe that it is coincidence that my jobs began failing on the same day as other people's jobs. Thoughts?

Bob Breum