Document --proto udp6, tcp6, etc.

Trac #793

Signed-off-by: Gert Doering <gert@greenie.muc.de>
Acked-by: Arne Schwabe <arne@rfc2549.org>
Message-Id: <20170319193451.24289-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg14283.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>

diff --git a/doc/openvpn.8 b/doc/openvpn.8
index 10869608121ad40e2ebc4f51a8cef16527bcedae..612cdddc3817b271ad6608aa9da8342b7f3ae3da 100644 (file)
--- a/doc/openvpn.8
+++ b/doc/openvpn.8
@@ -419,6 +419,16 @@ can be
 or
 .B tcp-server.
 
+These will only try IPv4 to connect to the remote host.  To use IPv6,
+add "6" to the protocol, as in
+.B udp6,
+.B tcp6-client,
+or
+.B tcp6-server.
+OpenVPN 2.3 cannot auto-determine whether to use IPv4 or IPv6 (or
+automatically try whatever is available) - full dual-stack functionality
+is available starting with OpenVPN 2.4.0
+
 The default protocol is
 .B udp
 when