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FS#3058 - PPPoE fails repeatedly; until reboot #7826

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openwrt-bot opened this issue Apr 29, 2020 · 3 comments
Open

FS#3058 - PPPoE fails repeatedly; until reboot #7826

openwrt-bot opened this issue Apr 29, 2020 · 3 comments
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flyspray release/19.07 pull request/issue targeted (also) for OpenWrt 19.07 release

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@openwrt-bot
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monnier:

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

@openwrt-bot
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tverlaan:

I have a similar issue, which I'm suspecting started on 19.07. I've tweaked the settings a lot but haven't been able to resolve it. To get more debug logging you can configure debug and a specific log file in /etc/ppp/options. That should get you a bit more info on what is going on.

@openwrt-bot
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monnier:

Thanks. That sounds like a promising way to get more info.
I'll try to remember in case the problem appears again, but it hasn't affected me in the last 5 months (IOW ever since my WAN connection changed from ADSL2 to VDSL).

@openwrt-bot
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gryrmln:

Confirmed, similar circumstances. Pre-built 19.07 OpenWRT BTHomeHub5a firmware (Plusnet One hub) over ADSL2 provisioned by Plusnet. Only recovery discovered so far for PAD0 timeout is to reboot...

@aparcar aparcar added the release/19.07 pull request/issue targeted (also) for OpenWrt 19.07 release label Feb 22, 2022
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