I have the same router & this issue has been around for quite awhile.
From my experience I can go months without any problems at all but as soon as I connect my mobile or other device via wifi, within the next day or so I have this exact problem: Internet works but devices themselves can't reach the internet. I can also connect to the router remotely via external network connection throuh VPN, & some times I can get past the router (connecting to cameras) & some times I can't. And despite running Skynet & having it make sure internet works, it doesn't solve this issue.
If I turn the firewall off/on it seems to go back to normal until it happens again. So it's more like it's blocking an IP from routing through, which would be same or similar as no DHCP?
From my experience I can go months without any problems at all but as soon as I connect my mobile or other device via wifi, within the next day or so I have this exact problem: Internet works but devices themselves can't reach the internet. I can also connect to the router remotely via external network connection throuh VPN, & some times I can get past the router (connecting to cameras) & some times I can't. And despite running Skynet & having it make sure internet works, it doesn't solve this issue.
If I turn the firewall off/on it seems to go back to normal until it happens again. So it's more like it's blocking an IP from routing through, which would be same or similar as no DHCP?