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authorArne Schwabe <arne@rfc2549.org>2014-01-03 15:49:40 +0100
committerGert Doering <gert@greenie.muc.de>2014-01-03 16:01:12 +0100
commit69e03f4cd4971c8748faa83be45c89694d4b7a51 (patch)
tree50ccfaccaee9e3be3b7a32507e589242970f69b4 /README.IPv6
parent813aa55754c27bdae5380dce415497a574b47e1b (diff)
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Update IPv6 related readme files
Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1388760580-7548-1-git-send-email-arne@rfc2549.org> URL: http://article.gmane.org/gmane.network.openvpn.devel/8167 Signed-off-by: Gert Doering <gert@greenie.muc.de>
Diffstat (limited to 'README.IPv6')
-rw-r--r--README.IPv627
1 files changed, 9 insertions, 18 deletions
diff --git a/README.IPv6 b/README.IPv6
index 56c97ab..18068fe 100644
--- a/README.IPv6
+++ b/README.IPv6
@@ -35,31 +35,22 @@ over an IPv6 network ("OpenVPN over IPv6").
The code in 2.3.0 supersedes the IPv6 transport patches from JuanJo Ciarlante,
formerly located at http://github.com/jjo/openvpn-ipv6
+OpenVPN 2.4.0 includes a big overhaul of the IPv6 transport patches
+originally implemented for the Android client (ics-openvpn)
-Use the following options to select IPv6 transport:
+IPv4/IPv6 transport is automatically is selected when resolving addresses.
+Use a 6 or 4 suffix to force IPv6/IPv4:
--proto udp6
+ --proto tcp4
--proto tcp6-client
- --proto tcp6-server
+ --proto tcp4-server
--proto tcp6 --client / --proto tcp6 --server
-On systems that permit IPv4 connections on IPv6 sockets (Linux by
-default, FreeBSD and NetBSD if you turn off the "v6only" sysctl by
-running "sysctl -w net.inet6.ip6.v6only=0"), an OpenVPN server can
+On systems that allow IPv4 connections on IPv6 sockets
+(all systems supporting IPV6_V6ONLY setsockopt), an OpenVPN server can
handle IPv4 connections on the IPv6 socket as well, making it a true
-dual-stacked server.
+dual-stacked server. Use bind ipv6only to disable this behaviour.
On other systems, as of 2.3.0, you need to run separate server instances
for IPv4 and IPv6.
-
-The client side code is not really "dual-stacked" yet, as it does not
-automatically try both address families when connecting to a dual-stacked
-server. For now, you can achieve this with <connection> stanzas in your
-openvpn config:
-
- <connection>
- remote my.dual.stack.server 1194 udp6
- </connection>
- <connection>
- remote my.dual.stack.server 1194 udp
- </connection>