diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index fb68cd63d..f2ab2af9d 100644
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -224,6 +224,7 @@ interface=$IRONIC_INSPECTOR_INTERFACE
 bind-interfaces
 dhcp-range=$IRONIC_INSPECTOR_DHCP_RANGE
 dhcp-boot=pxelinux.0
+dhcp-sequential-ip
 EOF
 }
 
diff --git a/doc/source/install.rst b/doc/source/install.rst
index ae92732ef..53dc6919a 100644
--- a/doc/source/install.rst
+++ b/doc/source/install.rst
@@ -125,6 +125,12 @@ As for PXE boot environment, you'll need:
     enable-tftp
     tftp-root={TFTP ROOT, e.g. /tftpboot}
     dhcp-boot=pxelinux.0
+    dhcp-sequential-ip
+
+  .. note::
+    ``dhcp-sequential-ip`` is used because otherwise a lot of nodes booting
+    simultaneously cause conflicts - the same IP address is suggested to
+    several nodes.
 
 * You have to install and configure one of 2 available ramdisks: simple
   bash-based (see `Using simple ramdisk`_) or more complex based on