Within Oracle VB, I assigned management PC to Adapter1 to MikroTik Ether1 via a Bridged connection Juniper_ Router1-MikroTik_ SW-1-MikroTik_ SW-2-Juniper_ Router2 To Fix: On the CLI create a new bridge to Ether1 and set the IP address to the new bridge but even then Interfaces, Interface List tab still insists Ether1 is WAN. If I assign the management IP address to the Ether1 LAN port RouterOS will dynamically change it to Ether2 and Ether1 to WAN. Layer-2 bridging initially works until the RouterOS makes a dynamic behind the scenes change (about 5 minutes). Oracle VB GUI -by default- only allows 4 interfaces within the GUI. I set these 2 devices -(SW-1 and SW-2) in Bridge-Mode, created Access vlans and a Trunk port between them. I start with System, Reset configuration, No Default Configuration and Do Not Backup. I have 2 MikroTik routers (CHR) setup in a virtual environment - mostly for learning research of RouterOS. There is NO GUI update of this dynamic behind the scenes change. The RouterOS performs this conversation behind the scenes and doesn't update the GUI after this automatic dynamic change which kills the management IP connection. My QUESTION: Why does RouterOS insist on setting Ether1 as a WAN port?

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