Hello.
"Bearer control mode" is added in Release 7 as I am aware of. It's not vendor specific.
"If Bearer Control Mode is provided by the GGSN in the PCO, the Bearer Control Mode IE shall be included in order to
inform the SGSN about the bearer control mode and shall indicate the same bearer control mode as indicated to the MS
in the PCO."
Wireshark (I'm using latest version) decodes this information element with no problem.
There's probably a method to select Release used by GGSN but the GGSN tests were done on is in a live mobile network and doing configuration changes on it is not an option.
I will make those changes in these files in a proper way so there's no confusion what is added and what is deleted (actually nothing is deleted).
Greetings.