PPPOE Drops due to PADT packets

[#1]

I keep getting disconnected every 30 minutes or so and am getting the below errors in my router log:

(1080593.780000) PPP LCP Receive Configuration Reject
21:28:17, 16 Nov. (1080593.780000) PPP LCP Send Configuration ACK
21:28:17, 16 Nov. (1080593.780000) PPP LCP Receive Configuration Request
21:28:17, 16 Nov. (1080593.770000) PPP LCP Send Configuration Request
21:28:14, 16 Nov. (1080590.950000) CWMP: session closed due to error: Could not resolve host
21:28:14, 16 Nov. (1080590.940000) CWMP: Server URL: https://dbtpnhdm.bt.mo; Connecting as user: ACS username
21:28:14, 16 Nov. (1080590.930000) CWMP: Session start now. Event code(s): '4 VALUE CHANGE'
21:27:44, 16 Nov. (1080560.690000) CWMP: session closed due to error: Could not resolve host
21:27:44, 16 Nov. (1080560.670000) CWMP: Server URL: https://dbtpnhdm.bt.mo; Connecting as user: ACS username
21:27:44, 16 Nov. (1080560.670000) CWMP: Session start now. Event code(s): '4 VALUE CHANGE'
21:27:43, 16 Nov. (1080560.420000) CWMP: Initializing transaction for event code 4 VALUE CHANGE
21:27:43, 16 Nov. (1080559.710000) PPPoE is down after 29 minutes uptime [Disconnected]
21:27:40, 16 Nov. (1080557.460000) PPP LCP Send Termination Request [PPPoE PADT received]

[#2]

I am experiencing exactly the same issue. The disconnect period varies between 10 mins and 50 mins and has been happening for the last few days. I have registered a support call and will post the reply here

[#3]

@Slobcat1337

Do you have a Google Chromecast by any chance? And if so are you using the Plusnet HUB One or a BT HomeHub 5?

If yes to both questions then it is an issue between the Chromecast and the router software. You will need to unplug the chromecast to solve the problem. A fix is available for the Chromecast but the issue is that you cannot connect it to the 2 routers mentioned to get the fix as they crash as soon as they see the Chromecast device!

[#4]

Alternatively are you backing up to the cloud? If so then this might be the issue https://community.plus.net/t5/Fibre-Broadband/Plusnet-fibre-broadband-does-not-cope-with-uploads-and...