diff options
Diffstat (limited to 'share/man/man4')
| -rw-r--r-- | share/man/man4/lo.4 | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/share/man/man4/lo.4 b/share/man/man4/lo.4 index 0491936b493..f73e93a9439 100644 --- a/share/man/man4/lo.4 +++ b/share/man/man4/lo.4 @@ -1,3 +1,4 @@ +.\" $OpenBSD: lo.4,v 1.4 1998/02/14 18:50:34 mickey Exp $ .\" $NetBSD: lo.4,v 1.3 1994/11/30 16:22:23 jtc Exp $ .\" .\" Copyright (c) 1983, 1991, 1993 @@ -40,8 +41,7 @@ .Nm lo .Nd software loopback network interface .Sh SYNOPSIS -.Sy pseudo-device -.Nm loop +.Sy pseudo-device Nm loop Em <number> .Sh DESCRIPTION The .Nm loop @@ -60,6 +60,14 @@ The loopback should .Em never be configured first unless no hardware interfaces exist. +.Pp +Configuring loopback interface for +.Xr inet 4 +with +.Em link1 +flag set you achieve a functionality such as equivalent to setting +the whole set of addresses wich belongs to the sub/super-net of the +address and netmask configured on the interface. .Sh DIAGNOSTICS .Bl -diag .It lo%d: can't handle af%d. @@ -67,15 +75,25 @@ The interface was handed a message with addresses formatted in an unsuitable address family; the packet was dropped. .El +.Sh EXAMPLES +ifconfig lo1 inet 192.168.1.1 netmask 255.255.255.0 link1 +this would configure lo1 the way equivalent to: +.Pp +awk 'BEGIN {for(i=1;i<255;i++) \ +print "ifconfig lo1 inet 192.168.1."i" netmask 255.255.255.255"}'|sh .Sh SEE ALSO .Xr intro 4 , .Xr inet 4 , -.Xr ns 4 +.Xr ns 4 , +.Xr ifconfig 8 .Sh HISTORY The .Nm device appeared in .Bx 4.2 . +.Pp +The wildcard functionality first appeared in +.Ox 2.2 . .Sh BUGS Previous versions of the system enabled the loopback interface automatically, using a nonstandard Internet address (127.1). |