ifenslave – Attach and detach slave network devices to a bonding device.

ifenslave(8) – Linux man page


ifenslave – Attach and detach slave network devices to a bonding device.


ifenslave [-acdfhuvV] [–all-interfaces] [–change-active] [–detach] [–force] [–help] [–usage] [–verbose] [–versionmaster slave …


ifenslave is a tool to attach and detach slave network devices to a bonding device. A bonding device will act like a normal Ethernet network device to the kernel, but will send out the packets via the slave devices using a simple round-robin scheduler. This allows for simple load-balancing, identical to “channel bonding" or “trunking" techniques used in switches.

The kernel must have support for bonding devices for ifenslave to be useful.


       -a, --all-interfaces
Show information about all interfaces.-c, –change-active
Change active slave.

-d, –detach
Removes slave interfaces from the bonding device.

-f, –force
Force actions to be taken if one of the specified interfaces appears not to belong to an Ethernet device.

-h, –help
Display a help message and exit.

-u, –usage
Show usage information and exit.

-v, –verbose
Print warning and debug messages.

-V, –version
Show version information and exit.
If not options are given, the default action will be to enslave interfaces.


The following example shows how to setup a bonding device and enslave two real Ethernet devices to it:

# modprobe bonding
# ifconfig bond0 netmask
# ifenslave bond0 eth0 eth1


ifenslave was originally written by Donald Becker <becker@cesdis.gsfc.nasa.gov>, and has since been updated by various kernel developers.

This manual page was written by Guus Sliepen <guus@debian.org> for the Debian GNU/Linux system.

BSD November 6, 2011 BSD

Referenced By