1.\" $NetBSD: vether.4,v 1.2 2020/09/27 13:59:24 wiz Exp $ 2.\" 3.\" $OpenBSD: vether.4,v 1.5 2017/10/17 22:47:58 schwarze Exp $ 4.\" 5.\" Copyright (c) 2009 Theo de Raadt <deraadt@openbsd.org> 6.\" 7.\" Permission to use, copy, modify, and distribute this software for any 8.\" purpose with or without fee is hereby granted, provided that the above 9.\" copyright notice and this permission notice appear in all copies. 10.\" 11.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18.\" 19.Dd October 17, 2017 20.Dt VETHER 4 21.Os 22.Sh NAME 23.Nm vether 24.Nd virtual Ethernet interface 25.Sh SYNOPSIS 26.Cd "pseudo-device vether" 27.Sh DESCRIPTION 28The 29.Nm 30interface simulates a normal Ethernet interface by encapsulating 31standard network frames with an Ethernet header, specifically 32for use as a member in a 33.Xr bridge 4 . 34.Pp 35To use 36.Nm 37the administrator needs to configure an address onto the interface 38so that packets can be routed to it. 39An Ethernet header will be prepended and, if the 40.Nm 41interface is a member of a 42.Xr bridge 4 , 43the frame will show up there. 44.Sh SEE ALSO 45.Xr bridge 4 , 46.Xr ifconfig 8 47.Sh HISTORY 48The 49.Nm 50interface first appeared in 51.Ox 4.7 52and 53.Nx 10 . 54.Sh AUTHORS 55.An Theo de Raadt Aq Mt deraadt@openbsd.org 56.Sh BUGS 57Like 58.Xr tap 4 , 59the Ethernet address chosen will be partially random, and may 60occasionally collide with another address. 61