diff options
Diffstat (limited to 'share/man/man4')
| -rw-r--r-- | share/man/man4/lo.4 | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/share/man/man4/lo.4 b/share/man/man4/lo.4 index 1806e064fd4..a39f96fce5d 100644 --- a/share/man/man4/lo.4 +++ b/share/man/man4/lo.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: lo.4,v 1.6 1998/02/14 18:55:04 mickey Exp $ +.\" $OpenBSD: lo.4,v 1.7 1998/02/14 20:44:40 deraadt Exp $ .\" $NetBSD: lo.4,v 1.3 1994/11/30 16:22:23 jtc Exp $ .\" .\" Copyright (c) 1983, 1991, 1993 @@ -61,13 +61,18 @@ The loopback should be configured first unless no hardware interfaces exist. .Pp -Configuring loopback interface for +Configuring a loopback interface for .Xr inet 4 -with +with the +.Em link1 +flag set will make the interface answer to the whole set of +addresses identified as being in super-net which is specified +by the address and netmask. Obviously you should not set the .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. +flag on interface +.Nm lo0 Ns , +but instead use another interface like +.Nm lo1 Ns . .Sh DIAGNOSTICS .Bl -diag .It lo%d: can't handle af%d. @@ -77,10 +82,11 @@ 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 +is 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 +print "ifconfig lo1 inet 192.168.1."i" netmask 255.255.255.255 alias"}'|sh .Sh SEE ALSO .Xr intro 4 , .Xr inet 4 , @@ -96,9 +102,13 @@ The wildcard functionality first appeared in .Ox 2.3 . .Sh BUGS Previous versions of the system enabled the loopback interface -automatically, using a nonstandard Internet address (127.1). +automatically, using a nonstandard Internet address (127.0.0.1). Use of that address is now discouraged; a reserved host address for the local network should be used instead. .Pp -You should be carefull using ipnat with link1 set about the -packets coming from loopback interfaces. +You should be careful using +.Xr ipnat 8 +with +.Em link1 +set on an interface, because it may believe the packets are coming +from a loopback address. |