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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

Clay Gerrard authored on 2016/09/01 18:38:06
Showing 1 changed files
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@@ -521,16 +521,14 @@ created flavors as follows:
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 IP Version
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 ----------
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-``IP_VERSION`` can be used to configure DevStack to create either an
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-IPv4, IPv6, or dual-stack self service project data-network by with
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+``IP_VERSION`` can be used to configure Neutron to create either an
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+IPv4, IPv6, or dual-stack self-service project data-network by with
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 either ``IP_VERSION=4``, ``IP_VERSION=6``, or ``IP_VERSION=4+6``
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-respectively.  This functionality requires that the Neutron networking
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-service is enabled by setting the following options:
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+respectively.
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     ::
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-        disable_service n-net
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-        enable_service q-svc q-agt q-dhcp q-l3
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+        IP_VERSION=4+6
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 The following optional variables can be used to alter the default IPv6
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 behavior: