We do seem to have had a few reports of ppp regressions around this timeframe.
Begin forwarded message: Date: Thu, 20 Apr 2006 23:28:24 +0200 (CEST) From: Nuri Jawad <[EMAIL PROTECTED]> To: linux-kernel@vger.kernel.org Subject: Bug: PPP dropouts in >=2.6.16 Good evening, I've recently had problems with my ADSL connection (PPPoE) after upgrading from 2.6.15.3 to 2.6.16.5. Every now and then, it would stall for 30-50 seconds. According to tcpdump, during these dropouts packets get received through ppp0 but none that are supposed to be sent appear on the interface. This is consistent with the modem not sending out any data via its ATM interface during these periods. I made sure the ISP, modem or ethernet interface wasn't the problem with a second box running IPCop (minimal 2.4 router distro, I can log in twice with my ISP) and a telnet connection to the modem that never stalled. Upgrading pppd from 2.4.2 to 2.4.4b1 and rp-pppoe from 3.5 (latest Debian package) to 3.8 had no effect. I was using Bittorrent and also the [EMAIL PROTECTED] client so the system had a high load. Stopping those seemed to reduce the frequency of dropouts but they were still coming up at least every few hours. A fallback to the old kernel made the problem disappear. I then tested 24 hours a day this week by pinging my box from 2 hosts and making sure above load was persistent, while trying different kernels. So far I can say that: - <= 2.6.15.7 is not affected, tested with .3, .4 and .7 - >= 2.6.16 is affected, tested with 2.6.16, .1, .5 and .9 - the dropouts last between 30 and 50 seconds but often exactly 41, they appear about every half to one hour - a night yields 20-40 lost packets with 2.6.15 and 700-1100 with 2.6.16 on my connection The system: P4 Northwood with HT enabled, 2 GB RAM, Asus P4C800 Boot/root PATA ICH5, torrents saved to SATA HD through ata-piix Third drive through sata-promise Debian GNU/Linux unstable Kernel config: http://jawad.org/.config Let me know what I can do to give you more specific information. Regards, Nuri - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
