Clarify default IP_VERSION in docs
The prior art on other options in the same document seemed to be
calling out the default in a pre-formatted block after describing the
possible values.
I believe the default value for the option was first changed [1], then
the docs were fixed [2], then the information was unintentionally
dropped from the docs [3].
1. Related-Change: If0e0b818355e4cb1338f7fa72af5e81e24361574
2. Related-Change: Ib6603b4f6ea0b4079f9a4ea46e723ecbb2ea371d
3. Related-Change: Iddd27cb54f1d9f062b9c47ff9ad6a2bef3650d6b
Change-Id: I662403db3b08a351a680587440ad1f15a6f8ee5d
diff --git a/doc/source/configuration.rst b/doc/source/configuration.rst
index 1161b34..22809eb 100644
--- a/doc/source/configuration.rst
+++ b/doc/source/configuration.rst
@@ -521,16 +521,14 @@
IP Version
----------
-``IP_VERSION`` can be used to configure DevStack to create either an
-IPv4, IPv6, or dual-stack self service project data-network by with
+``IP_VERSION`` can be used to configure Neutron to create either an
+IPv4, IPv6, or dual-stack self-service project data-network by with
either ``IP_VERSION=4``, ``IP_VERSION=6``, or ``IP_VERSION=4+6``
-respectively. This functionality requires that the Neutron networking
-service is enabled by setting the following options:
+respectively.
::
- disable_service n-net
- enable_service q-svc q-agt q-dhcp q-l3
+ IP_VERSION=4+6
The following optional variables can be used to alter the default IPv6
behavior: