Android 5.1 - E/bt-l2cap: initate direct connection fail, topology limitation

[GuiZ88]

Hi, in Android 5.1, on some devices, received the following error:

04-01 10:13:53.133 1549-1678/com.android.bluetooth D/BtGatt.GattService: clientConnect() - address=F6:38:AD:F0:52:D2, isDirect=true
04-01 10:13:53.133 1549-1646/com.android.bluetooth D/btif_config: btif_get_address_type: Device [f6:38:ad:f0:52:d2] address type 1
04-01 10:13:53.133 1549-1646/com.android.bluetooth D/btif_config: btif_get_device_type: Device [f6:38:ad:f0:52:d2] type 2
04-01 10:13:53.133 1549-1699/com.android.bluetooth E/bt-l2cap: initate direct connection fail, topology limitation
04-01 10:13:53.133 1549-1699/com.android.bluetooth W/bt-l2cap: L2CA_ConnectFixedChnl create_conn failed
04-01 10:13:53.134 1549-1699/com.android.bluetooth E/bt-att: gatt_connect failed
04-01 10:13:53.134 1549-1699/com.android.bluetooth E/bt-btif: Connection open failure

Seems to fail on (initate direct connection fail, topology limitation). Is it known problem?

Thanks