Date: Wed, 03 Jun 1998 22:45:38 +0200 From: Gary Jennejohn <garyj@peedub.muc.de> To: freebsd-isdn@FreeBSD.ORG Subject: Re: Problem oder normal ? Message-ID: <199806032045.WAA20581@peedub.muc.de> In-Reply-To: Your message of "Wed, 03 Jun 1998 10:12:39 %2B0200." <m0yh8f1-00006jC@hcswork.hcs.de>
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Hellmuth Michaelis writes:
>>From the keyboard of Gary Jennejohn:
>
>> >> some minutes ago, when I was closing my open internet-connetion, I got
>> >> a somhow strage looking message from the FreeBSD (2.2.5) kernel
>> >> ("i4b-L3-next_l3state").I don't know if this is a problem.
>> >
>> >This is an indication of a problem. The isppp driver instructs layer 4
>> >to disconnect 2 times which is not appropriate. Perhaps Gary or Joerg
>> >know more why this happens.
>>
>> that was my first thought when I saw this report. I took a quick look
>> at the code (both i4b_isppp.c and if_spppsubr.c) but didn't see anything
>> obvious.
>
>I did not look at i4b_isppp.c and if_spppsubr.c but at the layer 3 fsm. The
>bug report says, that the layer 3 is already in the disconnect state and
>gets a second EV_DISCRQ.
>
>A workaround were to ignore the second EV_DISCRQ in l3, but according to
>Q.931 (03/93) it is illegal to do that.
>
my first suspicion was that something changed in the sppp related code so
that it was doing 2 disconnects istead of only 1. This was the situation
in the early days before I noticed it and fixed it :-)
Anyway, I've done some testing with isppp including doing ``ifconfig down''
and haven't seen any errors. The one thing I didn't try was hanging up
using isdnd.
I also have not seen any problems with automatic hangups using isppp. The
kernel time outs work just fine and the connection is closed just like it's
supposed to be.
---
Gary Jennejohn
Home - garyj@muc.de
Work - garyj@fkr.dec.com
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