Its in the generic NetBSD FAQ, though not in incredible detail :)

		http://www.netbsd.org/FAQ/#xconsole

		David/absolute

	  -=-  There will not be a send-off, a funeral or mass  -=-

On Sun, 19 Apr 1998, Paul Goyette wrote:

> You're probably getting messages sent to /dev/console.  Try running
> xconsole to redirect those messages.  And Yes, I think this is in a FAQ
> somewhere, but I can for the life of me remember just where  :)
> 
> On Sun, 19 Apr 1998, Greg Dunn wrote:
> 
> > Still plugging away with the network setup stuff...   I was connecting via
> > telnet to the NetBSD machine (so I didn't have to keep running across the
> > room :)  and on the occasions where I get a login failure the error
> > messages are clobbering the screen on my X display at the NetBSD machine.
> > 
> > I routinely start X with "startx &>/dev/null" which gets rid of most of the
> > glitches, but apparently somebody isn't playing fair with their diagnostic
> > output...  inetd perhaps?  Changing /etc/syslog.conf to redirect output and
> > trying the "-C" option on my xterm also failed to stem the flow.  Anyway, I
> > thought this had already been addressed in the 1.3 distribution, but maybe
> > not...
> > 
> > The NetBSD machine:
> > 
> > Mac IIci
> > 20MB RAM
> > Toby video
> > Asante MacCon Ethernet card
> > 1GB hard drive partitioned 80MB HFS, 40MB swap, 100MB root, 750MB usr
> > NetBSD 1.3 w/SLOTMAN-MRG-SBC kernel#220
> > 
> > 
> > --
> > | Greg Dunn                       |  I don't like to smile unless    |
> > | gregdunn@indy.net               |  I have a reason.                |
> > | GregDunn@aol.com                |                  Daria           |
> > | http://members.aol.com/gregdunn |                                  |
> > 
> > 
> > 
> 
> -----------------------------------------------------------------------------
> | Paul Goyette      | Public Key fingerprint:    | E-mail addresses:        |
> | Network Engineer  |   0E 40 D2 FC 2A 13 74 A0  |  paul@whooppee.com       |
> | and kernel hacker |   E4 69 D5 BE 65 E4 56 C6  |  paul.goyette@ascend.com |
> -----------------------------------------------------------------------------
>