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LO (4) | Special files and drivers | Unix Manual Pages | :man

NAME

lo - software loopback network interface

CONTENTS

Synopsis
Description
Diagnostics
See Also
History
Bugs

SYNOPSIS


.Cd "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

BUGS


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