doc/rados: remove dual-stack docs

Remove references to dual-stack mode in
doc/rados/configuration/network-config-ref.rst and
doc/rados/configuration/msgr2.rst. This feature seems to have been
planned but never to have been completely implemented.

See the tracker issue listed below for an email exchange detailing the
confusion caused by the presence in the documentation of this
now-removed information.

Fixes: https://tracker.ceph.com/issues/65631
Signed-off-by: Zac Dover <zac.dover@proton.me>
(cherry picked from commit c65d2056c27d75f91af44e004d8defe7ffbf5fc8)

diff --git a/doc/rados/configuration/msgr2.rst b/doc/rados/configuration/msgr2.rst
index 33fe4e022b168ebff30ee40d90a3a66c15d0f9d8..e3767ad3de4a184f15231b1b0e238a4702fca09c 100644 (file)
--- a/doc/rados/configuration/msgr2.rst
+++ b/doc/rados/configuration/msgr2.rst
@@ -90,10 +90,6 @@ Similarly, two options control whether IPv4 and IPv6 addresses are used:
   * :confval:`ms_bind_ipv6` [default: false] controls whether a daemon binds
     to an IPv6 address
 
-.. note:: The ability to bind to multiple ports has paved the way for
-   dual-stack IPv4 and IPv6 support.  That said, dual-stack operation is
-   not yet supported as of Quincy v17.2.0.
-
 Connection modes
 ----------------
 

diff --git a/doc/rados/configuration/network-config-ref.rst b/doc/rados/configuration/network-config-ref.rst
index f776eefb23eaac23ba413bb95046559028bb43c9..7c0c3442c544437c5ef82e07f2be80495df2c720 100644 (file)
--- a/doc/rados/configuration/network-config-ref.rst
+++ b/doc/rados/configuration/network-config-ref.rst
@@ -214,28 +214,6 @@ following option to the ``[global]`` section of your Ceph configuration file.
 We prefer that the cluster network is **NOT** reachable from the public network
 or the Internet for added security.
 
-IPv4/IPv6 Dual Stack Mode
--------------------------
-
-If you want to run in an IPv4/IPv6 dual stack mode and want to define your public and/or
-cluster networks, then you need to specify both your IPv4 and IPv6 networks for each:
-
-.. code-block:: ini
-
-       [global]
-               # ... elided configuration
-               public_network = {IPv4 public-network/netmask}, {IPv6 public-network/netmask}
-
-This is so that Ceph can find a valid IP address for both address families.
-
-If you want just an IPv4 or an IPv6 stack environment, then make sure you set the `ms bind`
-options correctly.
-
-.. note::
-   Binding to IPv4 is enabled by default, so if you just add the option to bind to IPv6
-   you'll actually put yourself into dual stack mode. If you want just IPv6, then disable IPv4 and
-   enable IPv6. See `Bind`_ below.
-
 Ceph Daemons
 ============