On Tue, 28 Sep 1999, Lou Langholtz wrote:

  1. First my IP connections over PPP get slower and slower. I have a
     28.8Kbaud modem and ussually connect at 21Kbaud and get about that in
     transfer rate. After a couple days of packets my transfer rates get
     worse and worse. I start seeing 38 byte per second transfers and then a
     few hours later the connection just seizes up all-together. I have a
     Cisco 2511 at the other end and suspect it has something to do with the
     problem. At least in encouraging it.
  2. Then I reconnect my modem via netcfg de-activating PPP and
     power-cycling my modem. For a while again I get reasonable transfer
     rates. But then the same thing happens again where the rate drops
     abysmally.
  3. Finally, after a few connection lock / PPP reconnect cycles, the next
     lock-up is my whole machine. Sometimes, after the reboot, connecting to
     the same places I hang my whole machine again right away. The longer
     I wait before connecting to those places however the less I've noticed
     that it locks right back up again. That leads me to believe that the
     lock up problem is going on at the TCP layer; not at the PPP layer. Of
     course if it didn't have anything to do with the PPP layer then people
     not using PPP would see this problem as well.

I see similar things with Ethernet (de4x5), including the lock up when trying
to ifconfig the interface down.

A similar bug was just fixed in the 2.2.x branch of vger. I asked Dave Miller
whether the same bug is also present in 2.3.x, and he said no.

Greetings,

						Geert

--
Geert Uytterhoeven ----------------- Sony Suprastructure Center Europe (SUPC-E)
Geert.Uytterhoeven@sonycom.com ------------------- Sint Stevens Woluwestraat 55
Phone +32-2-7248648 Fax +32-2-7262686 ---------------- B-1130 Brussels, Belgium


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