$eth1_part
+auto eth2
iface eth2 inet manual
+auto eth3
iface eth3 inet manual
iface eth4 inet manual
$eth1_part
+auto eth2
iface eth2 inet manual
+auto eth3
iface eth3 inet manual
iface eth4 inet manual
$eth1_part
+auto eth2
iface eth2 inet manual
+auto eth3
iface eth3 inet manual
iface eth4 inet manual
$eth1_part
+auto eth2
iface eth2 inet manual
+auto eth3
iface eth3 inet manual
+auto eth4
iface eth4 inet manual
+auto eth5
iface eth5 inet manual
auto eth1.100