Hi all... necro this tread again as it also saved me some effort.

I am currently using the AX-86u on firmware 3.0.0.4.386_41535. As the previous comments mentioned to tag LAN4 as 500, unfortunately it did not work for me. But this new setting now does.



Previously if I tried to put LAN3 and LAN4 as 500 neither port will work for internet or intranet. This seems to have solved it.... There is the 2.5G port which I have not tested to see if it also enable it yet (in this firmware it seems the issue has been to make the port WAN only rather than the LAN/WAN it was supposed to be).