--- a/README	Thu Feb 26 15:05:04 2015 +0200
+++ b/README	Thu Feb 26 15:05:18 2015 +0200
@@ -109,3 +109,29 @@
         filename debian/wheezy/pxelinux.0;
     }
 
+=== DHCP hosts in multiple subnets/domains ===
+A host with different interfaces in multiple domains must specify unique interface names:
+
+    [foo.dhcp]
+        [[asdf]]
+            ip              = 10.1.0.1
+            ethernet.eth1   = 00:11:22:33:44:55
+
+    [bar.dhcp]
+        [[asdf]]
+            ip              = 10.2.0.1
+            ethernet.eth2   = 55:44:33:22:11:00
+
+    $ bin/pvl.hosts-dhcp etc/hosts/dhcp2 
+    host asdf-eth1 {
+        option host-name asdf;
+        hardware ethernet 00:11:22:33:44:55;
+        fixed-address 10.1.0.1;
+    }
+
+    host asdf-eth2 {
+        option host-name asdf;
+        hardware ethernet 55:44:33:22:11:00;
+        fixed-address 10.2.0.1;
+    }
+