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+
+UNSUPPORTED OPTIONS
+===================
+
+Options listed in this section have been removed from OpenVPN and are no
+longer supported
+
+--client-cert-not-required
+ Removed in OpenVPN 2.5. This should be replaxed with
+ ``--verify-client-cert none``.
+
+--ifconfig-pool-linear
+ Removed in OpenVPN 2.5. This should be replaced with ``--topology p2p``.
+
+--key-method
+ Removed in OpenVPN 2.5. This option should not be used, as using the old
+ ``key-method`` weakens the VPN tunnel security. The old ``key-method``
+ was also only needed when the remote side was older than OpenVPN 2.0.
+
+--no-iv
+ Removed in OpenVPN 2.5. This option should not be used as it weakens the
+ VPN tunnel security. This has been a NOOP option since OpenVPN 2.4.
+
+--no-replay
+ Removed in OpenVPN 2.5. This option should not be used as it weakens the
+ VPN tunnel security.
+
+--ns-cert-type
+ Removed in OpenVPN 2.5. The ``nsCertType`` field is no longer supported
+ in recent SSL/TLS libraries. If your certificates does not include *key
+ usage* and *extended key usage* fields, they must be upgraded and the
+ ``--remote-cert-tls`` option should be used instead.