Methods and systems for transmitting data packets of a data session through a selected connection at a network node. The network node determines number of possible connections. When data packets belong to a new data session, a connection is selected to be the selected connection based on connection selection criteria. Further data packets belonging to the data session will be transmitted through the selected connection. A connection selection criteria include selecting a connection with the lowest latency among all connections. Evaluation packets based on the first data packet of the new data session are used to evaluate latency.