$OpenBSD: vether.4,v 1.5 2017/10/17 22:47:58 schwarze Exp $
Copyright (c) 2009 Theo de Raadt <deraadt (at] openbsd.org>
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.Dd September 26, 2017 .Dt VETHER 4 .Os .Sh NAME .Nm vether .Nd virtual Ethernet interface .Sh SYNOPSIS .Cd "pseudo-device vether" .Sh DESCRIPTION The .Nm interface simulates a normal Ethernet interface by encapsulating standard network frames with an Ethernet header, specifically for use as a member in a .Xr bridge 4 .
p To use .Nm the administrator needs to configure an address onto the interface so that packets can be routed to it. An Ethernet header will be prepended and, if the .Nm interface is a member of a .Xr bridge 4 , the frame will show up there.
p The .Nm link state can be controlled using .Xr ifconfig 8 :
p l -tag -offset indent -width Cm -compact t Cm media auto link state .Dq up t Cm media none link state .Dq down .El .Sh SEE ALSO .Xr bridge 4 , .Xr ifconfig 8 .Sh HISTORY The .Nm interface first appeared in .Ox 4.7 and .Nx 10 . .Sh AUTHORS .An Theo de Raadt Aq Mt deraadt (at] openbsd.org .Sh BUGS Like .Xr tap 4 , the Ethernet address chosen will be partially random, and may occasionally collide with another address.
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