On Wed, Jan 26, 2005 at 10:44:22AM +0100, Janos Farkas wrote: > On 2005-01-21 at 15:44:44, Aurélien GÉRÔME 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. > > > > When my ISP connection via PPPoE (kernel side) goes down, reconnection > > does not occur, and the kernel displays continuous: > > > > kernel: unregister_netdevice: waiting for ppp0 to become free. Usage count > > = 1 > > 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 <http://kerneltrap.org/node/4545> about it. Cheers.
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