EVE-NG viosl2 mac table goes crazy when connecting to external network

Running into a very strange problem on EVE-NG and can't quite figure out what I am doing wrong, I've even rebuilt my server just to be sure it wasn't environmental. Used two different versions of the viosl2 switch image

I am at a loss for ideas. Here's my setup:

• I have an EVE-NG instance running on an ESXi host (promiscuous mode is enabled for the vSwitch).
• I have 4 FortiGate VMs that I connect to a viosl2 switch which is in turn connected to the cloud 1 interface (which is mapped to the VM's eth1) here's the config in /etc/network/interfaces for the interface in question
  iface eth1 inet manual
auto pnet1
iface pnet1 inet manual
bridge_ports eth1
bridge_stp off
• show mac address-table looks fine as long as the viosl2 isn't connected to cloud1, the instant that port is enabled ALL MAC ADDRESSES show as coming from the port connected to cloud1.
  port g1/3 down:
  Switch#show mac address-table

Mac Address Table

-------------------------------------------

Vlan Mac Address Type Ports

---- ----------- -------- -----

1 5000.0002.0003 DYNAMIC Gi0/0

1 5000.0003.0003 DYNAMIC Gi0/1

1 5000.0004.0003 DYNAMIC Gi0/2

1 5000.0005.0003 DYNAMIC Gi0/3

Port gi1/3 up
Switch#show mac address-table

Mac Address Table

-------------------------------------------

Vlan Mac Address Type Ports

---- ----------- -------- -----

1 0050.5692.1aa0 DYNAMIC Gi1/3

1 5000.0002.0003 DYNAMIC Gi1/3

1 5000.0003.0003 DYNAMIC Gi1/3

1 5000.0004.0003 DYNAMIC Gi1/3

1 5000.0005.0003 DYNAMIC Gi1/3

1 5000.0006.0007 DYNAMIC Gi1/3

Needless to say this is driving me bonkers, and affecting reachability to the instances behind the switches. Have any of you seen this? Am I doing something wrong? Any help is apprecaited.