|
|
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.
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.