Bug 162927 - [tun] Modem-PPP error ppp[1538]: tun0: Phase: Clearing choked output queue - rs232 external 56k modem
Summary: [tun] Modem-PPP error ppp[1538]: tun0: Phase: Clearing choked output queue - ...
Status: Open
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: Unspecified
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-11-28 18:30 UTC by Ben Benson
Modified: 2017-12-31 22:32 UTC (History)
0 users

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Description Ben Benson 2011-11-28 18:30:09 UTC
On Freebsd 8.1, 8.2 and PCBD 8.1, 8.2 when using a modem during rain storms when Satellite internet connection is not available periodically the modem connectioon terminates after a long delay. Looking in /usr/local/ppp.log I See:
  ppp[1538]: tun0: Phase: Clearing choked output queue
when I try to ping I get back a message it is out of buffer space.
I have brought the tun0, fxp0 interfaces down and back up with no positive results. I have tried to cu -l /dev/cuau0 on all OS's but of course I do not connect to the modem. I have totally re-configured the interfaces with no positive results. Different external modems did nothing to correct the problem.

The only way to solve the problem is a shutdown and restart.

It is such a pain, I have tried Freebsd OS versions 8.1 and 8.2 also PCBSD 8.1 and 8.2 on TPX4 Asus boards, X5DPA-TGM+ Super Micro, GA-V7KMLS and GA-7DPXDW-C - GIGABYTE boards. I have a stand alone system on all the time now attempting to fix this problem while other systems are on high speed connections. I need a periodic modem connection for my servers from home. On FreeBSD 2.2.8 and 4.11 your rock hard, die hard systems I never had this problem. I skipped 5.X and 6.X they seemed to not be good for servers in the server room. Version 7.3 is my current. Version 9 looks a ways off, so, I need a fix version 8.

Fix: 

The only way to solve the problem is a shutdown and restart.
How-To-Repeat: It just happens. Some times in 30 minutes. Other times a day may pass.
Comment 1 Mark Linimon freebsd_committer freebsd_triage 2011-12-03 23:27:42 UTC
Responsible Changed
From-To: freebsd-i386->freebsd-net

reclassify.
Comment 2 Eitan Adler freebsd_committer freebsd_triage 2017-12-31 08:00:50 UTC
For bugs matching the following criteria:

Status: In Progress Changed: (is less than) 2014-06-01

Reset to default assignee and clear in-progress tags.

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