1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)qe.4 8.1 (Berkeley) 06/05/93 7.\" 8.Dd 9.Dt QE 4 vax 10.Os BSD 4.3 11.Sh NAME 12.Nm qe 13.Nd 14.Tn DEC DEQNA 15.Tn Q-bus 1610 Mb/s Ethernet interface 17.Sh SYNOPSIS 18.Cd "device qe0 at uba? csr 174440 vector qeintr" 19.Sh DESCRIPTION 20The 21.Nm qe 22interface provides access to a 10 Mb/s Ethernet network through 23the 24.Tn DEC DEQNA 25.Tn Q-bus 26controller. 27.Pp 28Each of the host's network addresses 29is specified at boot time with an 30.Dv SIOCSIFADDR 31.Xr ioctl 2 . 32The 33.Nm qe 34interface employs the address resolution protocol described in 35.Xr arp 4 36to map dynamically between Internet and Ethernet addresses on the local 37network. 38.Pp 39The interface normally tries to use a 40.Dq trailer 41encapsulation 42to minimize copying data on input and output. 43The use of trailers is negotiated with 44.Tn ARP . 45This negotiation may be disabled, on a per-interface basis, 46by setting the 47.Dv IFF_NOTRAILERS 48flag with an 49.Dv SIOCSIFFLAGS 50.Xr ioctl . 51.Sh SEE ALSO 52.Xr netintro 4 , 53.Xr inet 4 , 54.Xr arp 4 55.Sh HISTORY 56The 57.Nm 58driver appeared in 59.Bx 4.3 . 60