From owner-freebsd-stable  Mon Aug 27 21: 7:31 2001
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Date: Tue, 28 Aug 2001 00:07:20 -0400
To: Archie Cobbs <archie@dellroad.org>
From: Mike Tancsa <mike@sentex.net>
Subject: Re: kernel panic when bringing up a VLAN interface (netgraph?)
Cc: yar@freebsd.org, stable@freebsd.org
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At 08:37 PM 8/27/2001 -0700, Archie Cobbs wrote:
>Mike Tancsa writes:
> > >>On a new machine I am trying to bring up a trunked port to my vlan
> > >>interface.  This is with the most recent fxp patches and STABLE as of
> > >>this afternoon
> > >
> > >4.4-RC FreeBSD 4.4-RC #0: Mon Aug 27 16:46:47 EDT 2001
> > >
> > >OK, here is a backtrace. If there is more info required, let me know.
> >
> > It seems something to do with netgraph. If I remove all of the netgraph
> > options from the kernel, I am ok.
>
>It appears the problem is that some ethernet interface has
>been created (presumably a VLAN interface), yet ether_ifattach()
>was never called..  so ng_ether crashes because there's no
>node associated with the interface (which there would be had
>ether_ifattach() been called).
>
>Maybe a VLAN expert can shed some light?


The following PR
http://www.freebsd.org/cgi/query-pr.cgi?pr=30149

has all the details summarized.  Perhaps yar@freebsd.org might know ? Not 
sure if he follows this list, so I have cc'd him.

         ---Mike


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