From owner-freebsd-embedded@FreeBSD.ORG  Thu Dec 18 09:59:37 2008
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Date: Thu, 18 Dec 2008 10:59:30 +0100
From: Paul Schenkeveld <fb-embedded@psconsult.nl>
To: freebsd-embedded@freebsd.org
Message-ID: <20081218095930.GA85416@psconsult.nl>
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Subject: Re: Wake-on-lan packages don't get through
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Hi,

On Thu, Dec 18, 2008 at 09:58:53AM +0100, Markus Hitter wrote:
> 
> Am 16.12.2008 um 20:13 schrieb Paul Schenkeveld:
> 
>> On some of my machines I need to explicitely send the packet to the
>> IP LAN broadcast address, e.g. 192.168.1.255 (assuming /24 netmask).
> 
> This did the trick, finally. Those checksums reported as being bad were 
> obviously a red herring.

Does your network card support checksum offload (TXCSUM set in ifconfig
options)?  In that case tcpdump on the output interface will show bad
checksums as the checksum gets calculated later on by the card.  If you
tcpdump on another computer in the same LAN you'll see the wake-on-lan
packets with correct checksums.

> Thanks for helping,

You're welcome.

> MarKus

Regards,

Paul Schenkeveld