1.\" $OpenBSD: vether.4,v 1.4 2014/01/20 05:07:49 schwarze Exp $ 2.\" 3.\" Copyright (c) 2009 Theo de Raadt <deraadt@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: January 20 2014 $ 18.Dt VETHER 4 19.Os 20.Sh NAME 21.Nm vether 22.Nd virtual Ethernet interface 23.Sh SYNOPSIS 24.Cd "pseudo-device vether" 25.Sh DESCRIPTION 26The 27.Nm 28interface simulates a normal Ethernet interface by encapsulating 29standard network frames with an Ethernet header, specifically 30for use as a member in a 31.Xr bridge 4 . 32.Pp 33To use 34.Nm 35the administrator needs to configure an address onto the interface 36so that packets can be routed to it. 37An Ethernet header will be prepended and, if the 38.Nm 39interface is a member of a 40.Xr bridge 4 , 41the frame will show up there. 42.Sh SEE ALSO 43.Xr bridge 4 , 44.Xr inet 4 , 45.Xr inet6 4 , 46.Xr hostname.if 5 , 47.Xr ifconfig 8 , 48.Xr netstart 8 49.Sh BUGS 50Like 51.Xr tun 4 , 52the Ethernet address chosen will be partially random, and may 53occasionally collide with another address. 54