Re: PPPoE Modem hangup after random time - how to debug?

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On Mon, 4 May 2020 at 20:12, Guillaume Nault <gnault@xxxxxxxxxx> wrote:
> On Mon, May 04, 2020 at 06:36:48PM +0200, David Balažic wrote:
> > On Mon, 4 May 2020 at 15:01, Guillaume Nault <gnault@xxxxxxxxxx> wrote:
> > > You can use "%pM" for printing MAC addresses. Also, it'd be interesting
> > > to have information about promisc mode:
> > >   "dev %s, flags: %#x, promiscuity %u",
> > >   dev->name, dev->flags, dev->promiscuity,
> >
> > I'll report later values printed when a stray PADT appears.
> >
> Okay, but please keep printing the destination MAC address of the
> packet. I was providing the flags/promiscuity string just to get extra
> information, not to replace your original log.

This was logged now:

(all at May  6 05:34:50 2020 UTC)
pppoe_disc_rcv PADT received, sid=1, SRC: a4:7b:2c:9e:c7:44, DST:
pppoe_disc_rcv PADT received, own hw addr: c4:XX:XX:XX:XX:ed
      dev eth1.3902, flags: 0x1003, promiscuity 0
pppoe_disc_rcv PADT received, not four our address, ignoring

(the last line is from my fix, the connection is now not dropped when
the PADT is not for us; works fine, my connection stays up and

I'll clean up and post the patch later.


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