Apparently the issue is the Network Manager which reconfigures the network interfaces once it starts. Either stop it from starting or remove it completely.
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address 196.192.0.215
submask 255.255.255.0
gateway 196.192.0.10
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address 196.192.0.215
netmask 255.255.255.0
gateway 196.192.0.10