Content-type: text/html Man page of lo

lo

Section: Environments, Tables, and Troff Macros (7)
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NAME

lo - Software loopback network interface  

SYNOPSIS

pseudo-device loop  

DESCRIPTION

The loopback interface is a software loopback mechanism which is 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. 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.  

NOTES

Previous versions of the UNIX 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.  

ERRORS

The interface was handed a message with addresses formatted in an unsuitable address family; the packet was dropped.  

RELATED INFORMATION

Networking: inet(7), netintro(7). delim off


 

Index

NAME
SYNOPSIS
DESCRIPTION
NOTES
ERRORS
RELATED INFORMATION

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Time: 02:40:18 GMT, October 02, 2010