Hi Franco,
I found the problem.
I connected my Nighthawk again.
In my Nighthawks settings I can edit device names so I know what devices are connected without checking my self-made MAC (device) list constantly.
I can also click to see a list of allowed devices currently not connected and a list of blocked devices. Something I haven’t checked before.
After resetting today again and editing the names, I’ve noticed that this time my mobile that I connected to 2.4 and then 5GHz are listed separately in my device list with a different MAC address. One will show active as it is and the other one is visible in list under currently not connected but different MAC. Now I cant use 2.4 without issues on my mobile. I know that shouldn’t be, no matter what band I am using the MAC will always be the same!?
Only the device that is actually connected will show with IP but when I click show devices currently not connected I see the devices without IP and different MAC. When I reconnect that device to that particular band it will have a different IP to the band it was connected before and same fake MAC.
Google helped me to identify that this MAC doesn’t exist or doesn’t belong to a certain manufacturer but most likely coming from my own network, router.
Can you follow what I am saying? This is not normal, is it?
I had my laptop asleep, when I turned it on again, I saw another device connected to the router without a name and an unknown MAC. I blocked it and lost internet on 2.4. I had to go on 5Ghz to allow this MAC again and now all 2.4GHz devices have vanished on the list. 2.4GHz is completely down and I cant connect to 5GHz either, no devices could. And now the fake MAC of my Mobile is gone. I would have to reset that router again.
Seems that router is a goner and I am back on my ISP modem.
Clearly this was and is causing my IP and gateway issues?
But then again, I did have issues with the other modem as well. 2 issues?
Test is still ongoing. Kids are homeschooling, hopefully only until Thursday, since we are in lockdown, then I can do the tests proper. This morning I had 3 laptops and 2 mobiles connected and had hardly issues. It never dropped out but speed does reduce greatly at times.
Will see what happens
Thanks again.