The supported_signature_algorithms is a new field in TLS 1.2 and does not exist in TLS 1.1.

FCS_TLSS_EXT.2.4, Test 2 is replaced as follows:

Test 2:

[conditional]  If the TOE supports TLS 1.2 and higher, the evaluator shall configure the server to send a certificate request to the client without populating the supported_signature_algorithm field with the signature algorithm used by the client’s certificate. The evaluator shall attempt a connection using the client certificate and verify that the connection is denied.

See issue description.