Wan connection crashing randomly

[Raze360]

Hello all,

I have a flint 2 on 4.8.3 firmware that will randomly lose its internet connection. The only thing that will bring it back up is a reboot.

I managed to get a couple of screen grabs of the log at the time of a crash. I'm not sure what's going on but maybe they provide an answer so someone more knowledgeable than me?

Any help would be much appreciated,

Thank you.

[will.qiu]

Hi

Please export the device logs and send them to us via private message for review once the issue occurs again.
The current screenshots don't seem to contain much useful information.

How to export logs:

How to send private messages:

[Raze360]

I will do that. Its usually guaranteed to crash every evening, so hopefully I'll catch it this evening and I'll send the logs on to you.

thank you for the reply.

[will.qiu]

Sun Jan 11 11:25:25 2026 daemon.info pppd[17882]: No response to 5 echo-requests
Sun Jan 11 11:25:25 2026 daemon.notice pppd[17882]: Serial link appears to be disconnected.
Sun Jan 11 11:25:25 2026 daemon.info pppd[17882]: Connect time 2474.1 minutes.

Based on the logs, it appears the interface disconnected because the upstream PPP server failed to respond to LCP (Link Control Protocol) echo requests.

Under normal circumstances, the interface should automatically restart and attempt to re-establish the PPPoE dial-up connection. However, since the logs were exported very quickly after the disconnection, we cannot see the subsequent reconnection attempts.

If the issue persists, please try the following adjustment:

1. Go to LuCI -> Network -> Interfaces.

2. Click the Edit button next to the WAN interface.
   

   

3. Navigate to the Advanced Settings tab.

4. Increase the values for LCP echo failure threshold and LCP echo interval.
   

   

Increasing these values gives the connection more "breathing room" before the router decides the link is dead, which can help if your ISP's server is momentarily unresponsive.