Multiband GTK KDE GTK for multi-band operation (e.g., 2.4GHz + 5GHz)
Group Temporal Key for multi-band
Key ID (bits 0-1) - identifies which GTK slot
Tx flag (bit 2) - this key is used for Tx by AP
Multiband GTK KDE GTK for multi-band operation (e.g., 2.4GHz + 5GHz)