.\"	$OpenBSD: qe.4,v 1.12 2007/05/31 19:19:57 jmc Exp $
.\"	$NetBSD: qe.4,v 1.3 1996/03/03 17:14:01 thorpej Exp $
.\"
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.\"     from: @(#)qe.4	6.4 (Berkeley) 3/27/91
.\"
.Dd $Mdocdate: May 31 2007 $
.Dt QE 4 vax
.Os
.Sh NAME
.Nm qe
.Nd DEC DEQNA Q-bus Ethernet device
.Sh SYNOPSIS
.Cd "qe0 at uba? csr 0174440"
.Sh DESCRIPTION
The
.Nm qe
interface provides access to a 10 Mb/s Ethernet network through
the
.Tn DEC DEQNA
.Tn Q-bus
controller.
.Pp
The interface normally tries to use a
.Dq trailer
encapsulation
to minimize copying data on input and output.
The use of trailers is negotiated with
.Tn ARP .
This negotiation may be disabled, on a per-interface basis,
by setting the
.Dv IFF_NOTRAILERS
flag with an
.Dv SIOCSIFFLAGS
.Xr ioctl 2 .
.Sh SEE ALSO
.Xr arp 4 ,
.Xr inet 4 ,
.Xr intro 4 ,
.Xr netintro 4 ,
.Xr uba 4 ,
.Xr hostname.if 5 ,
.Xr ifconfig 8
.Sh HISTORY
The
.Nm
driver appeared in
.Bx 4.3 .