Commit 2529b5d4 authored by Mike Frysinger's avatar Mike Frysinger

ifconfig(8): document - suffix behavior w/alias interfaces

The ifconfig tool has long had the ability to suppress implicit bring up
by adding an - suffix to the alias name.  Document this in the man page.

URL: https://bugs.gentoo.org/568446Reported-by: default avatarJoakim Tjernlund <joakim.tjernlund@infinera.com>
parent 3f170bff
......@@ -60,9 +60,9 @@ The name of the interface. This is usually a driver name followed by
a unit number, for example
.B eth0
for the first Ethernet interface. If your kernel supports alias interfaces,
you can specify them with
you can specify them with syntax like
.B eth0:0
for the first alias of eth0. You can use them to assign a second address. To
for the first alias of eth0. You can use them to assign more addresses. To
delete an alias interface use
.BR "ifconfig eth0:0 down" .
Note: for every scope (i.e. same net with address/netmask combination) all
......@@ -70,7 +70,11 @@ aliases are deleted, if you delete the first (primary).
.TP
.B up
This flag causes the interface to be activated. It is implicitly
specified if an address is assigned to the interface.
specified if an address is assigned to the interface; you can suppress this
behavior when using an alias interface by appending an
.BR "-"
to the alias (e.g.
.BR "eth0:0-" ).
.TP
.B down
This flag causes the driver for this interface to be shut down.
......
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