R3 Ethernet ports stop working

[rforce99]

Hi Netduma Support,

I’m experiencing an issue with my Netduma R3 where the Ethernet ports stop working after about 1–2 days of uptime.

Here is what happens:

• The router works normally at first

• After 1–2 days, all devices connected via Ethernet lose internet access

• WiFi continues to work without any issues

• A reboot temporarily fixes the problem, but it comes back again after some time

I have already tried the following troubleshooting steps:

• Updated to the latest firmware version

• Performed a full factory reset (without restoring any backup)

• Set up the router from scratch

• Tested multiple Ethernet ports

• Tested different Ethernet cables and devices

• Disabled IPv6

• Increased the DHCP lease time to 10000

The issue still persists consistently.

From what I can tell, it seems like either a DHCP issue or a software-related problem, since a reboot always restores functionality temporarily.

Could you please advise on what might be causing this and if there is a fix or known issue?

Thanks in advance.