I started experiencing the following problem since I got fiber Internet installed in my home about a month ago: my new RT-AC68U randomly disconnects from the internet or at least pretends to. The log only shows the infamous "isp's dhcp did not function properly" message and on the main page of the webui, it shows "Internet Status: disconnected".
At this point, devices on the network can no longer access the Internet. However, if I click on the icon next to the Internet disconnected message, the interface still shows a wan IP, lists the dns servers and so on. Furthermore, if I use a VPN client on a computer connecting through the router, it is still able to connect and browse the Internet as usual. Also, I have a computer on the network which is connected through a VPN 24/7 and this one is not affected at all by this and can still connect to the Internet.
In order to restore the connection, I just need to go to the WAN page and click Apply, no need to change any setting. Connection is then restored within 10s.
I bought this router to replace a RT-AC66U because it exhibited the exact same behaviour. I upgraded to Merlin without success. As a matter of fact, disconnects are much more frequent since I started using Merlin. I have been working with my ISP on this but they did not find any problem. The modem is a Hitron CDA-RES which seems to be working fine. Its logs do not show any disconnect.
It might also be worth mentioning that the disconnections happen much more often when I run a backup program on my Synology NAS and the NAS is actively uploading files. At the same time, I have had friends able to connect from remote locations to my Plex server running on the NAS without any issue at the same moment when the router was saying it was disconnected from the Internet.
As everything seems to be working fine otherwise, I am under the impression that I am just missing a setting to adjust to solve the issue, but after testing many changes, I am running out of ideas and would appreciate any suggestion.
At this point, devices on the network can no longer access the Internet. However, if I click on the icon next to the Internet disconnected message, the interface still shows a wan IP, lists the dns servers and so on. Furthermore, if I use a VPN client on a computer connecting through the router, it is still able to connect and browse the Internet as usual. Also, I have a computer on the network which is connected through a VPN 24/7 and this one is not affected at all by this and can still connect to the Internet.
In order to restore the connection, I just need to go to the WAN page and click Apply, no need to change any setting. Connection is then restored within 10s.
I bought this router to replace a RT-AC66U because it exhibited the exact same behaviour. I upgraded to Merlin without success. As a matter of fact, disconnects are much more frequent since I started using Merlin. I have been working with my ISP on this but they did not find any problem. The modem is a Hitron CDA-RES which seems to be working fine. Its logs do not show any disconnect.
It might also be worth mentioning that the disconnections happen much more often when I run a backup program on my Synology NAS and the NAS is actively uploading files. At the same time, I have had friends able to connect from remote locations to my Plex server running on the NAS without any issue at the same moment when the router was saying it was disconnected from the Internet.
As everything seems to be working fine otherwise, I am under the impression that I am just missing a setting to adjust to solve the issue, but after testing many changes, I am running out of ideas and would appreciate any suggestion.