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Bug #1806

closed

OpenVPN Tunnel Network label configuration creates a wrong configuration file when using TAP device mode

Added by Rino Santilli almost 13 years ago. Updated about 12 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
-
Category:
OpenVPN
Target version:
-
Start date:
08/19/2011
Due date:
% Done:

0%

Estimated time:
Plus Target Version:
Release Notes:
Affected Version:
2.0
Affected Architecture:

Description

When creating a layer 2 tunnel using TAP devices in peer-to-peer shared key mode you get a warning in the OpenVPN logs because of the incorrect use of the ifconfig statement.
In fact, while when using TUN devices, ifconfig statement uses the l and rn arguments as local (server) ip and remote (clients) ip, when using TAP devices it expects a subnet mask as the second argument.

From the openvpn man page: "--ifconfig l rn : TUN: configure device to use IP address l as a local endpoint and rn as a remote endpoint. l & rn should be swapped on the other peer. l & rn must be private addresses outside of the subnets used by either peer. TAP: configure device to use IP address l as a local endpoint and rn as a subnet mask."

Regards

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