Disable msi with minimal interruption

ifconfig eth0 down
rmmod bnx2
modprobe bnx2 disable_msi=1
ifconfig eth0 up
route add -net default netmask 0.0.0.0 gw [default gw here] eth0

For bonding interface:

ifconfig bond0 up
ifenslave bond0 eth0
ifenslave bond0 eth1