From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?iso-8859-1?B?QXVy6WxpZW4gR8lS1E1F?= Subject: Re: waiting for ppp0 to become free (Re: ppp0 out of control) Date: Wed, 26 Jan 2005 21:31:18 +0100 Message-ID: <20050126203118.GB3705@roxor.be> References: <20050121144444.GA2100@roxor.be> <20050126094422.GA31040@lk8rp.mail.xeon.eu.org> Reply-To: =?iso-8859-1?B?QXVy6WxpZW4gR8lS1E1F?= Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="cWoXeonUoKmBZSoM" Cc: Janos Farkas , netdev@oss.sgi.com Return-path: To: linux-kernel@vger.kernel.org Content-Disposition: inline In-Reply-To: <20050126094422.GA31040@lk8rp.mail.xeon.eu.org> Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org --cWoXeonUoKmBZSoM Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jan 26, 2005 at 10:44:22AM +0100, Janos Farkas wrote: > On 2005-01-21 at 15:44:44, Aur=E9lien G=C9R=D4ME wrote: > > I am running 2.6.10 from kernel.org on Debian Sid ppc/x86, the same > > issue occurs with 2.6.9. Though, 2.6.8.1 and previous are fine. > >=20 > > When my ISP connection via PPPoE (kernel side) goes down, reconnection > > does not occur, and the kernel displays continuous: > >=20 > > kernel: unregister_netdevice: waiting for ppp0 to become free. Usage co= unt =3D 1 >=20 > BTW, I have seen many cases when this symptom annoyed me too, the last > one is that my shutdown scripts tried unloading the network driver > modules. Is your setup doing this by any chance? In my case, > apparently there were conntrack entries keeping the device in use, > which is almost useless when preparing to shutdown :) Actually, it happens after my ISP's LCP echos are not coming anymore, and then when pppd try to reconnect. > OTOH, I couldn't find a way to flush those conntracks, so I worked > around it by not rmmoding ethernet drivers. I have conntrack modules loaded too. I will try removing 8139too (on x86) and sungem (on ppc) if the issue occurs again. By the way, I also have IPv6 loaded, since I use a dual-stacked connection with native IPv6. How lucky I am! :) > In your case, it's probably conntrack too, I'd presume you are using > that PPPoE machine as a masquerading gateway, which by definition needs > connection tracking... I'm not sure either if this is a "real" change, > I only vaguely recollect as some moons earlier this wasn't a problem in > 2.6. Yep, 2.6.8.1 works fine, this issue appears on 2.6.9 and 2.6.10. I switched to a Debian 2.6.10 kernel for security reasons, and the issue has not come yet. I had a glance at the changelog and saw some network related patches. This is the -as patchset, see about it. Cheers. --cWoXeonUoKmBZSoM Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) iD8DBQFB9/4WI2xgxmW0sWIRAgcfAKDAfTExqnEouPtAnjH9XZpGc0kANwCfcdSU XZvwJNjym00EPqzyod6JU5o= =0MKM -----END PGP SIGNATURE----- --cWoXeonUoKmBZSoM--