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| author | Gert Doering <gert@greenie.muc.de> | 2015-04-28 12:20:19 +0200 |
|---|---|---|
| committer | Gert Doering <gert@greenie.muc.de> | 2015-04-30 09:10:26 +0200 |
| commit | 3a840739e43acc5ea15814be08debb9dbb7ba67c (patch) | |
| tree | 09e383e07d357a48216c069eac880f833edabb3a /doc | |
| parent | 4ad2b65d9deb3197d847d7dcc36715aa5394836f (diff) | |
| download | openvpn-3a840739e43acc5ea15814be08debb9dbb7ba67c.tar.gz openvpn-3a840739e43acc5ea15814be08debb9dbb7ba67c.tar.xz openvpn-3a840739e43acc5ea15814be08debb9dbb7ba67c.zip | |
explain effect of --topology subnet on --ifconfig
The fact that the second parameter of --ifconfig is no longer
a "remote address" but a "netmask" when using --dev tun and
--topology subnet was not documented clearly enough.
Trac #370
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Acked-by: Steffan Karger <steffan.karger@fox-it.com>
Message-Id: <1430216419-11943-1-git-send-email-gert@greenie.muc.de>
URL: http://article.gmane.org/gmane.network.openvpn.devel/9616
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/openvpn.8 | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/doc/openvpn.8 b/doc/openvpn.8 index 8b3e1a2..587b769 100644 --- a/doc/openvpn.8 +++ b/doc/openvpn.8 @@ -798,6 +798,12 @@ driver supports an command which sets a subnet instead of a remote endpoint IP address. This option exists in OpenVPN 2.1 or higher. + +Note: Using +.B \-\-topology subnet +changes the interpretation of the arguments of +.B \-\-ifconfig +to mean "address netmask", no longer "local remote". .\"********************************************************* .TP .B \-\-tun-ipv6 @@ -861,16 +867,21 @@ May be used in order to execute OpenVPN in unprivileged environment. Set TUN/TAP adapter parameters. .B l is the IP address of the local VPN endpoint. -For TUN devices, +For TUN devices in point-to-point mode, .B rn is the IP address of the remote VPN endpoint. -For TAP devices, +For TAP devices, or TUN devices used with +.B \-\-topology subnet, .B rn -is the subnet mask of the virtual ethernet segment +is the subnet mask of the virtual network segment which is being created or connected to. For TUN devices, which facilitate virtual -point-to-point IP connections, +point-to-point IP connections (when used in +.B \-\-topology net30 +or +.B p2p +mode), the proper usage of .B \-\-ifconfig is to use two private IP addresses @@ -885,7 +896,9 @@ you will be pinging across the VPN. For TAP devices, which provide the ability to create virtual -ethernet segments, +ethernet segments, or TUN devices in +.B --topology subnet +mode (which create virtual "multipoint networks"), .B \-\-ifconfig is used to set an IP address and subnet mask just as a physical |