unity Plugin

The unity plugin provides for libcharon support for parts of the IKEv1 Cisco Unity Extensions.

The plugin is disabled by default and can be enabled with the ./configure option


Client Behavior

As a client the IKEv1 charon daemon will narrow traffic selectors to the received Split-Include attributes and will automatically install IPsec bypass policies for received Local-LAN attributes.

Server Behavior

As a server the IKEv1 charon daemon will send Split-Include attributes for local_ts definitions containing multiple subnets to Unity-aware clients. Alternatively Unity-attributes may be assigned via the attr or attr-sql plugins.


Key Default Description



Send Cisco Unity vendor ID payload in main or aggressive mode

On a server the subnets listed in local_ts will be transmitted as Split-Include attributes to clients during ModeConfig. ModeConfig is only triggered if the client requests a virtual IP address.