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NetBSD 6.1.5 - man page for xvif (netbsd section 4)

XVIF(4) 			   BSD Kernel Interfaces Manual 			  XVIF(4)

NAME
     xvif -- Xen backend paravirtualized network interface

SYNOPSIS
     pseudo-device xvif

DESCRIPTION
     The xvif interface forms the backend part of the paravirtualized drivers used by Xen domains
     to offer network connectivity.

     When the guest domain is NetBSD, the endpoint of the xvif interface is a xennet(4) inter-
     face.  In the XenStore, xvif and xennet are identified by ``vif'' (virtual interface)
     entries.

     All xvif interfaces follow the ``xvifXiY'' naming convention, where 'X' represents the guest
     domain identifier, and 'Y' an arbitrary identifier; most of the time, it is the frontend
     interface identifier, e.g.  ``xennetY''.

     For convenience, the MAC address of an xvif interface is chosen by incrementing the third
     byte of the MAC address of the frontend device.

     Conceptually, frontends and backends drivers are similar to two Ethernet cards connected via
     a crossover cable.

DIAGNOSTICS
     xvif%di%d: can't read %s/mac: %d  The MAC address for this interface could not be read from
     XenStore.

     xvif%di%d: %s is not a valid mac address  The MAC address specified in the configuration
     file of the newly created guest domain is invalid.

     xvif%di%d: Ethernet address %s  MAC address of the xvif interface.

SEE ALSO
     ifmedia(4), xennet(4), ifconfig(8)

HISTORY
     The xvif driver first appeared in NetBSD 4.0.

AUTHORS
     The xvif driver was written by Manuel Bouyer <bouyer@NetBSD.org>.

BSD					  April 7, 2011 				      BSD


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