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Annotation of 43BSDTahoe/man/man4/lo.4, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983 Regents of the University of California.
        !             2: .\" All rights reserved.  The Berkeley software License Agreement
        !             3: .\" specifies the terms and conditions for redistribution.
        !             4: .\"
        !             5: .\"    @(#)lo.4        6.3 (Berkeley) 5/21/86
        !             6: .\"
        !             7: .TH LO 4 "May 21, 1986"
        !             8: .UC 5
        !             9: .SH NAME
        !            10: lo \- software loopback network interface
        !            11: .SH SYNOPSIS
        !            12: .B pseudo-device loop
        !            13: .SH DESCRIPTION
        !            14: The
        !            15: .I loop
        !            16: interface is a software loopback mechanism which may be
        !            17: used for performance analysis, software testing, and/or local
        !            18: communication.
        !            19: As with other network interfaces, the loopback interface must have
        !            20: network addresses assigned for each address family with which it is to be used.
        !            21: These addresses
        !            22: may be set or changed with the SIOCSIFADDR ioctl.
        !            23: The loopback interface should be the last interface configured,
        !            24: as protocols may use the order of configuration as an indication of priority.
        !            25: The loopback should \fBnever\fP be configured first unless no hardware
        !            26: interfaces exist.
        !            27: .SH DIAGNOSTICS
        !            28: \fBlo%d: can't handle af%d\fP.  The interface was handed
        !            29: a message with addresses formatted in an unsuitable address
        !            30: family; the packet was dropped.
        !            31: .SH SEE ALSO
        !            32: intro(4N), inet(4F), ns(4F)
        !            33: .SH BUGS
        !            34: Previous versions of the system enabled the loopback interface
        !            35: automatically, using a nonstandard Internet address (127.1).
        !            36: Use of that address is now discouraged; a reserved host address
        !            37: for the local network should be used instead.

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