HOWTO Setup Bonding Ethernet on Debian with a 2.4 kernel

This article was first written in July 2004 for the BeezNest technical
website (

To use Bonding Ethernet for High-Availability (fail-over) on Debian (Woody, Sarge or Sid with a 2.4.x kernel) you need to:

  • install package ifenslave-2.4
  • make sure the real NICs kernel modules are loaded automatically
  • edit /etc/network/interfaces to look like this:

iface bond0 inet static address netmask network gateway up /sbin/ifenslave bond0 eth0 up /sbin/ifenslave bond0 eth1

  • comment the lines referring to your real NICs in the same file
  • add the following lines to your /etc/modutils/arch/i386:

alias bond0 bonding options bonding mode=1 miimon=100 downdelay=200 updelay=200

  • launch update-modules

For 2.6 kernels, you might want to take a look at HOWTO Setup Bonding Ethernet on Debian with a 2.6 kernel

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