RBS850 Phantom MAC address appearing/disappearing from LANwith same IP as Satellite

I just now had the identical issue. I use my RBR/RBS850 in AP mode and within the last 10 min. received a notification from my router that a new device with MAC of 16:0C:6B:3E:FD:46 was connecting to my network with the IP address of my RBS850. This doesn't match any MAC address on my network and, when I look it up, doesn't resolve back to any vendor.

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Brownds wrote:

I have RBK853 (1 x RBR850 & 2 x RBS850) + 1 x additional RBS850 satellite.  All satellites are Cat 6 cabled direct to RBR850 router, All devices on same firmware version  v3.2.16.6 and have been factory reset, and mesh resync'd to router.  Guest Network is disabled and RBR850 is in Access Point Mode.  All appears to be working ok apart from the additional satellite which occasionally drops out out the mesh network and then immediately reconnects and resyncs.

 

It appears that the route cause for the additional satellite to eventually disconnect/reconnect to the mesh network via wired backhaul, is due to a phantom MAC Address which is constantly appearing/disappearing on the LAN.  The actual DHCP IP Bind address for the additional satellite is 192.168.1.6 which is bound to MAC 10xxxxxxxxDA, whereas the phantom MAC address is 12xxxxxxxxDD (xxxxxxxx denoting identical details) which also appears on the network with the same IP address of the satellite 192.168.1.6.  My manage switch the detects a duplicate IP address on the network and starts to alert.

 

I have tried to setup an DHCP IP Bind for the 12xxxxxxxxDD MAC, but it never makes a DHCP request and always assumes 192.168.1.6!

 

I have factory reset all devices and started over many times, but the additional satellite to the original RBK853 kit, always ends up with the same trait.

 

Any help with this would be much appreciated.

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