From owner-cvs-all  Mon Jul 26 16:27:38 1999
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From: Archie Cobbs <archie@whistle.com>
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Subject: Re: cvs commit: src/sys/net if_tun.c
In-Reply-To: <xzpg12b8iao.fsf@flood.ping.uio.no> from Dag-Erling Smorgrav at "Jul 26, 99 06:52:47 pm"
To: des@flood.ping.uio.no (Dag-Erling Smorgrav)
Date: Mon, 26 Jul 1999 16:26:23 -0700 (PDT)
Cc: bright@rush.net, des@flood.ping.uio.no, brian@FreeBSD.org,
	cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
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Dag-Erling Smorgrav writes:
> Alfred Perlstein <bright@rush.net> writes:
> > I still think it's an error to write a zero length packet to the
> > tun device
> 
> Why? I can't see any reason why it should be an error. Just ignore it
> silently.

I agree.. /dev/tun0 is inherently frame oriented, just like, eg,
a synchronous HDLC card. It's perfectly valid (though usually
meaningless) to send a zero length HDLC frame. There's nothing
special about the number zero.

-Archie

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Archie Cobbs   *   Whistle Communications, Inc.  *   http://www.whistle.com


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