can not wake on lan after halt -p (or shutdown -p now) on releng_7 and releng_7_0

David Adam zanchey at
Fri Oct 10 04:08:40 UTC 2008

On Mon, 6 Oct 2008, Georgi Iovchev wrote:
> I have a shutdown problem. I have a machine with gigabyte GA-G33M-DS2R
> motherboard. Integrated network card is Realtek 8111B.
> I can not wake the computer after I shutdown it from FreeBSD.
> It is a dualboot system - windows xp and freebsd. If I shutdown the
> computer from windows - later I can wake it up with magic packet. Even
> if i shutdown the machine on the boot menu with the power button - than
> later I can wake on lan. The only situation where I CANNOT wake it is
> when I shutdown the machine from freebsd (halt -p).
> First I tested with 7.0-RELEASE-p5 amd64 (RELENG_7_0) and than I
> upgraded to 7.1 PRERELASE amd64 (RELENG_7). I also tested with two
> network cards - the integrated one Realtek 8111B and another one Intel
> PRO1000PT PCI-E with WOL enabled.
> With both nics and both freebsd versions the situation is the same -
> after shutdown from bsd the computer is not able to wake on lan. The
> indication on the switch port says that after shut down there is
> active link.

I have a similar problem with an Intel SR1200 Pentium 3-class system, 
using fxp(4) cards, although I haven't yet tried the `halt -p` command.

I was discussing WoL with a colleague recently and he suggested that on 
some Linux systems he needed to use `ethtool -s eth0 wol g` on every boot 
to maintain the WoL status.

>From the ethtool(1) manpage:

       wol p|u|m|b|a|g|s|d...
              Set Wake-on-LAN options.  Not all devices  support  this.   
              g  Wake on MagicPacket(tm)

>From my reading, this might be necessary if the driver clears the flag 
during initialisation of the card.

kern/83807 was filed to fix this issue for sis(4), but was never 
committed. However, work is apparently being done in 8-CURRENT to support 
exposing the WoL settings to ifconfig: see . Until that work lands in a release, I 
think we're out of luck.

(Another administrator has also suggested that, on Linux at least, using 
the 'ifdown' command will destroy WoL status, but I don't think that's an 
issue here.)

Hope that helps. I'm sure any contributions to the effort to add driver 
support will be appreciated.

David Adam
zanchey at

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