user/1018: user-ppp's chat_write intermittent failure

[Ligon Durham <ldurham@SPSU.edu>]

>Number:         1018
>Category:       user
>Synopsis:       user-ppp's chat_write intermittent failure
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Dec 20 21:10:01 MST 1999
>Last-Modified:
>Originator:     ldurham
>Organization:
net
>Release:        2.6
>Environment:
	
	System      : OpenBSD 2.6
	Architecture: OpenBSD.i386
	Machine     : i386
>Description:
	I started ppp manually. After setting the device and speed, I
	attempted to start term. The program returned to packet mode
	instead of starting term.  I waited a few seconds and started
	term again. After a few seconds, term started correctly.
	Sometimes, term starts correctly the first time.

	Afterwards, I started ppp manually and used a dial script instead
	of term. Sometimes, I repeatedly get:
		tun0: Error: chat_write: Input/output error
	when starting the dial script. I type Ctrl-C to interrupt the dial
	script, then wait a few seconds, and try again.
	dial usually works the second time around.
>How-To-Repeat:
	The problem is intermittent and cannot always be repeated. I have had
	the most success at repeating it through the following interaction:

	myname# ppp
	Working in interactive mode
	Using interface: tun0
	ppp ON myname  set device /dev/cua02
	ppp ON myname  set speed 57600
	ppp ON myname  term
	deflink: Entering terminal mode on /dev/cua02
	Type `~?' for help
	ppp ON myname				/* on error packet mode line */ 

	I can never seem to get it to repeat when I want to analyze it, how
	nice.
>Fix:
	To workaround it, I just wait a few seconds and try term or dial
	again. I have gotten the error with two different serial ports and
	two different modems so I do not think it is hardware.

>Audit-Trail:
>Unformatted:
Reply-To: ldurham@spsu.edu
X-sendbug-version: 3.97