OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
    0%
  • Task Type Bug Report
  • Category Base system
  • Assigned To No-one
  • Operating System All
  • Severity Medium
  • Priority Very Low
  • Reported Version openwrt-19.07
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by Monnier - 29.04.2020

FS#3058 - PPPoE fails repeatedly; until reboot

I’m using the pre-built OpenWRT firmware for BT HomeHub 5a and am generally very happy with it. The problem that shows up is that every once in a while, the PPPoE connection goes down and stays down. I see in the log that the PPPoE is retried repeatedly but keeps failing. Disabling the corresponding interface and then re-enabling it (e.g. from LuCI) does not help (I do see that it takes the PPPoE and the DSL down and after a while the DSL comes back up but the PPPoE still keeps failing in the same way).

Rebooting fixes the issue, OTOH.

The system log repeats the following lines every 15 seconds or so:

Wed Apr 29 07:16:55 2020 daemon.notice netifd: Interface 'wan' is enabled
Wed Apr 29 07:16:55 2020 daemon.notice netifd: Interface 'wan' is setting up now
Wed Apr 29 07:16:55 2020 daemon.err insmod: module is already loaded - slhc
Wed Apr 29 07:16:55 2020 daemon.err insmod: module is already loaded - ppp_generic
Wed Apr 29 07:16:55 2020 daemon.err insmod: module is already loaded - pppox
Wed Apr 29 07:16:55 2020 daemon.err insmod: module is already loaded - pppoe
Wed Apr 29 07:16:55 2020 daemon.info pppd[13912]: Plugin rp-pppoe.so loaded.
Wed Apr 29 07:16:55 2020 daemon.info pppd[13912]: RP-PPPoE plugin version 3.8p compiled against pppd 2.4.7
Wed Apr 29 07:16:55 2020 daemon.notice pppd[13912]: pppd 2.4.7 started by root, uid 0
Wed Apr 29 07:17:10 2020 daemon.warn pppd[13912]: Timeout waiting for PADO packets
Wed Apr 29 07:17:10 2020 daemon.err pppd[13912]: Unable to complete PPPoE Discovery
Wed Apr 29 07:17:10 2020 daemon.info pppd[13912]: Exit.
Wed Apr 29 07:17:10 2020 daemon.notice netifd: Interface 'wan' is now down
Wed Apr 29 07:17:10 2020 daemon.notice netifd: Interface 'wan' is disabled

I cannot reproduce it at will. The problem occurred more often (like once a week maybe) in the past and I thought it had magically been resolved since it hadn’t re-appeared for the last 2 months, but it happened again today.

root@router:~# opkg list_installed | grep ppp
kmod-ppp - 4.14.167-1
kmod-pppoa - 4.14.167-1
kmod-pppoe - 4.14.167-1
kmod-pppox - 4.14.167-1
luci-proto-ppp - git-20.029.45734-adbbd5c-1
ppp - 2.4.7.git-2019-05-25-2
ppp-mod-pppoa - 2.4.7.git-2019-05-25-2
ppp-mod-pppoe - 2.4.7.git-2019-05-25-2
root@router:~# 

I suspect the above info is not sufficient to find the problem, so at this point, I’m mostly looking for suggestions as to how to get more verbose logs, or commands to try and run parts individually

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