More details. We use 2 WANs and so have several IP\Firewall\mangle settings. While the downgrade I faced with field mapping bugs. [New] Connection mark and [New] Routing mark fields were filled incorrectly. I even lost connection to the office network and had to ask collegues to help. I'm not ready ...

We had the same issue on RB1100AHx4 after upgrade from v6.49.2->v7.1.1.. IPSec VPN tunnel is estableshed fine but packets weren't routed to the tunnel. RDC to a client host stopped working after the upgrade. Had to downgrade to v6. Found several bugs while the downgrade. All of the found bugs were r...