I only see one VLAN option but then I also found this

So should I type “eth0” in VLAN ID ? Eth0 is where the internet cable is connected ?

I logged in and found this

Yeap thats the one. I think this is the part that I need to configure but dont know how. The page is called “setup gateway” . VLAN was off which I just turned ON. How do we setup VLAN?

Thank you so much. I think i’ll have to buy a switch. I have a shitty iinet tgvac789 V2 router which I think is useless.

Lol I am dumb as a potato. I only have a router-moden iinet tg789vac v2.