After VM creating with Debian 5 PV i see in /etc/interfaces:
auto eth0 lo
iface lo inet loopback
iface eth0 inet static
address 192.168.1.21
netmask 255.255.255.224
broadcast192.168.1.255
network 192.168.1.0
gateway 192.168.1.1
After several reboots of my VM lo interface has ceased to ifup with the system boot up. After dome manual intelligence http://wiki.debian.org/NetworkConfiguration i separate "auto eth0 lo" record like this:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.1.21
netmask 255.255.255.224
broadcast192.168.1.255
network 192.168.1.0
gateway 192.168.1.1
After these manipulations the lo interface has to start without any problems. please separate it by default when VMs creating.