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lo (4)
  • >> lo (4) ( FreeBSD man: Специальные файлы /dev/* )

  • BSD mandoc
     

    NAME

    
    
    lo
    
     - software loopback network interface
    
     
    

    SYNOPSIS

    device loop  

    DESCRIPTION

    The loop interface is a software loopback mechanism which may be used for performance analysis, software testing, and/or local communication. As with other network interfaces, the loopback interface must have network addresses assigned for each address family with which it is to be used. These addresses may be set or changed with the SIOCSIFADDR ioctl(2). The loopback interface should be the last interface configured, as protocols may use the order of configuration as an indication of priority. The loopback should never be configured first unless no hardware interfaces exist.  

    DIAGNOSTICS

    lo%d: can't handle af%d.
    The interface was handed a message with addresses formatted in an unsuitable address family; the packet was dropped.

     

    SEE ALSO

    inet(4), intro(4)  

    HISTORY

    The device appeared in BSD 4.2  

    BUGS

    Previous versions of the system enabled the loopback interface automatically, using a nonstandard Internet address (127.1). Use of that address is now discouraged; a reserved host address for the local network should be used instead.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    DIAGNOSTICS
    SEE ALSO
    HISTORY
    BUGS


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