ReadyNAS Replicate job returning "Unable to get local p2p address" Error

Hi All,

I recently purchased a second ReadyNAS RN102. Both ReadyNAS RN 102's are running on OS 6.6.0 and are on the same network.

I enabled ReadyNAS Replicate on both devices and registered them with the same ReadyNAS Replicate account. Both have static IP addresses, are a part of the same DNS server with 8.8.8.8 and 4.4.2.2 added as alternative DNS's, and IPv6 is disabled completely.

Eventually, I want to be able to move one of these devices to another location, but still have them replicate to each other.

When I create a job that is supposed to replicate some data (a small amount for test purposes) from one ReadyNAS to the other (and vice versa), I receive the below error in an email message stating, "Unable to get local p2p address".

[2016-10-25 10:57:37] [Info] Replicate version: 1.3.0 build R2
[2016-10-25 10:57:37] [Info] Starting backup job "Data Backup [2016-10-25 10h 37m AM]"
[2016-10-25 10:57:37] [Info] Locking target folder: /data/Replicate-Test/Data Backup [2016-10-25 10h 37m AM]
[2016-10-25 10:57:38] [Info] Resume folder is "/data/Replicate-Test/Data Backup [2016-10-25 10h 37m AM]/2016-10-25 10-39 (failed)/data"
[2016-10-25 10:57:38] [Warning] Incremental not possible
[2016-10-25 10:57:48] [Error] Unable to get local p2p address
[2016-10-25 10:57:48] [Error] Unable to get p2p local ip address
[2016-10-25 10:57:48] [Info] Unlock target folder: /data/Replicate-Test/Data Backup [2016-10-25 10h 37m AM]
[2016-10-25 10:57:48] [Info] Job finished

No actual data from one server is transfered to the other, HOWEVER, empty folders are created to prepare for the backups every time I run the job. Please see this picture:

This implies that at least the cloud is able to communicate with the two ReadyNAS devices, but the two devices are not able to communicate with each other.

This leads me to a few questions:

1. After ReadyNAS Cloud connects to both devices, is there a point where the devices are attempting to communicate directly with each other. This would make sense. If there is a firewall issue, my firewall may be allowing the ReadyNAS Cloud to pass, but not the other ReadyNAS device. But both devices are on the same network. Idk.
2. If it is a port issue, what port does ReadyCloud use to communicate?

Any tips of the trade would be highly appreciated.