I completely agree and customer is aware of the fact they need to upgrade the clients to TLS 1.2. They are just reviewing all options to take an informed decision.
In one of recent engagements, customer is migrating IIB v9 to ACE v11 fix pack 4(11.0.0.4). ACE 11.0.0.4 default TLS protocol is TLS 1.2 but there are certain REST applications who are yet ...