From the ifupdown package, nice stuff.

yard/replacements/etc/network/interfaces

@@ -0,0 +1,21 @@
+# /etc/network/interfaces -- configuration file for ifup(8), ifdown(8)
+
+# The loopback interface
+auto lo
+iface lo inet loopback
+
+# You will want to edit this for your requirements.
+# (network, broadcast and gateway are optional)
+
+# In the example below the host was set-up in this way:
+# ifconfig tap0 192.168.1.5
+# route add -host 192.168.1.4 gw 192.168.1.5 
+
+#auto eth0
+#iface eth0 inet static
+#	address 192.168.1.2
+#	netmask 255.255.255.0
+#	network 192.168.1.0
+#	broadcast 192.168.1.255
+#	gateway 192.168.1.5
+#