/interface detect-internet
set detect-interface-list=all
Rule #5, JFYI:
The twelve Rules of Mikrotik Club
You have a strange configuration, you have no NAT nor firewall, though you have ether1 as WAN,I understand it is a temporary/experimenting setup, but from your configuration it is not entirely clear the role of the device, right now - excluded ether1 - it seems like operating as a (dumb) switch on the other ports.