Controlable per-Flow Load Balancing (CFLB) is an initiative to revisit current load-balancing techniques. These techniques suffer from the fact that they use hash-based functions to balance packet. This prevent hosts to control the path taken by their packets.

CFLB consists of an invertible mechanism that allows sources to easily steer packets over any load-balanced path. CFLB consists in multiple implementation parts:

* A Linux kernel implementation of the CFLB-router forwarding path.

Multipath computation algorithms

The paper "On-the-fly TCP path selection algorithm in access link load balancing" written by Lin et al. proposes a new way to implement load balancer based on NAT.

Traditional load-balancer uses weighted round robin to define the uplink to use for a given stream. The model proposed by the authors deals only with TCP flows.