Then edit /etc/modprobe.d/arch/i386:

alias bond0 bonding
options bonding mode=2 miimon=100 downdelay=200 updelay=200

Then edit the file /etc/network/interfaces and insert something like the following (as a replacement for the configuration of eth0 that you might currently be using). Note that XX:XX:XX:XX:XX:XX must be replaced by the hardware address of one of the interfaces that are being bonded or by a locally administered address.

Edit /etc/network/interfaces:

auto bond0
iface bond0 inet static
pre-up modprobe bond0
hwaddress ether 00:02:55:E1:36:32
address 10.0.0.199
netmask 255.255.255.0
gateway 10.0.0.1
slaves eth0 eth1

The special file /proc/net/bonding/bond0 can be used to view the current configuration of the bond0 device.

/etc/init.d/networking restart