The issue was with "Internet Port Negotiation Speed Setting" configuration. The default value is "Auto Negotiation". I chose 100Mbps full duplex and the issue was resolved. @Sunshine, I don't see any...

@Sunshine It happens every 3-4 minutes, and the same logs appear every time it happens. the link recovered after ~3 seconds each time, but it makes applications to hang more than that.... i tried...

I encounter disconnections on the internet that I didn't have before with FW 1.10.0: " 1 INFO 0days, 00:12:05, [wan]Wan ethernet port plug off. 2 INFO 0days, 00:12:06, [dhcpc]interface bring down 3...