samba:/etc/network# cat interfaces
auto lo
iface lo inet loopback

# * Haupt-Adresse
auto eth1
iface eth1 inet static
  address 192.168.1.36
  netmask 255.255.255.0
  pointopoint 192.168.1.225

  # * zusaetzliche IP-Adressen
  up ip addr add 192.168.1.38/29 dev eth1
  up ip addr add 192.168.1.39/29 dev eth1
  up ip addr add 192.168.1.40/29 dev eth1

samba:/etc/network#