Log into OpenWRT router

Go to System\Software and click Update Lists... button

Search for iptables-mod-tee and install


Go to Networking\Switch


Enable mirroring of incoming packets checkbox
Enable mirroring of outgoing packets checkbox


Set the Mirror source port to your EQ computer lan port

Set the Mirror monitor port to your ShowEQ computer lan port


Click Save & Apply

Click System\Reboot\Perform reboot

Zone out and you should see skittles on ShowEQ.
No need for a hub or special vlan setup.