Sun Mar 19, 2023 7:58 pm
You almost certainly don't want to use it for TCP traffic is the main thing – it divides things by packets, not connections. If you have UDP traffic, which may not care about the src-address changing, it may be helpful to more evenly divide load, especially if it's all going to one place. For example, if the traffic is UDP-based tunnel to single end-point, Nth break up the packets between multiple WAN/uplinks. PCC, ECMP or connection-based things are more problematic in this UDP VPN case, since it won't divide load if you have a single port VPN tunnel at the other end.
But Nth (or an packet-based load balancing) can break some applications/protocols, that's not good for generic approach... why you don't see it as often used.