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    The following form allows you to view linux man pages.

    Command:

    epair

    
         kernel configuration file:
    
               device epair
    
         Alternatively, to load the driver as a module at boot time, place the
         following line in loader.conf(5):
    
               if_epair_load="YES"
    
    
    

    DESCRIPTION

         The epair is a pair of Ethernet-like software interfaces, which are con-
         nected back-to-back with a virtual cross-over cable.
    
         Each epair interface pair is created at runtime using interface cloning.
         This is most easily done with the ifconfig(8) create command or using the
         cloned_interfaces variable in rc.conf(5).  While for cloning you only
         give either epair or epair<n> the epair pair will be named like
         epair<n>[ab].  This means the names of the first epair interfaces will be
         epair0a and epair0b.
    
         Like any other Ethernet interface, an epair needs to have a network
         address.  Each epair will be assigned a locally administered address by
         default, that is only guaranteed to be unique within one network stack.
         To change the default addresses one may use the SIOCSIFADDR ioctl(2) or
         ifconfig(8) utility.
    
         The basic intend is to provide connectivity between two virtual network
         stack instances.  When connected to a if_bridge(4) one end of the inter-
         face pair can also be part of another (virtual) LAN.  As with any other
         Ethernet interface one can configure vlan(4) support on top of it.
    
    
    

    SEE ALSO

         ioctl(2), altq(4), bpf(4), if_bridge(4), vlan(4), loader.conf(5,)
         rc.conf(5), ifconfig(8)
    
    
    

    HISTORY

         The epair interface first appeared in FreeBSD 8.0.
    
    
    

    AUTHORS

         The epair interface was written by Bjoern A. Zeeb, CK Software GmbH,
         under sponsorship from the FreeBSD Foundation.
    
    
    

    BSD July 26, 2009 BSD

    
    
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