Service providers can use the information in the RADIUS attribute to identify a customer’s service.

Connect-Info attribute should be based on the L2TP connect-speed AVPs received from the LAC.
LNS should not generate this attribute by default.
The format of the Connect-Info attribute is as follows, where the TX speed and RX speed are equal to the respective L2TP AVPs
Connect-Info = "tx-speed/rx-speed"

Proposed configuration:

[l2tp]
connect-info=0|1|2

By default is disabled.

0 - disable sending connect info attribute
1 - Specify that the RX speed is always included when it is not zero
2 - Specify that the RX speed is only included when it is not zero and also is different than the TX speed