1. apt-get install modutils

2. Add in /etc/modprobe.d/aliases and /etc/modutils/aliases

alias bond0 bonding
alias eth0 e100
alias eth1 e100
options bonding mode=2 miimon=100

(I chose mode2 for load balancing instead of round robin nics with mode 0)

3.During debian installation I choosed eth1 as default nic, this implies that in the ifenslave command eth1 come first and eth0 after. My interfaces file is

# The primary network interface
allow-hotplug eth0
allow-hotplug eth1
#iface eth1 inet static
auto bond0
iface bond0 inet static
pre-up ifconfig bond0 up
pre-up ifconfig eth1 up
pre-up ifconfig eth0 up
address 192.168.1.69
netmask 255.255.255.0
#hwaddress ether 00:14:C6:33:5D:81
gateway 192.168.1.254
up ifenslave bond0 eth1 eth0
down ifconfig eth1 down
down ifconfig eth0 down
down ifenslave -d bond0 eth1 eth0

(I added  down commands since /etc/init.d/networking stop hanged completelly my box)

That's all