networking - in linux, does routing take different path on loopback vs IP assigned to NIC -


i using rhel 6.3 (2.6.x kernel). have tcp based client server applications. noticed when run them on same host, throughput approx same, irrespective whether server binds loopback or local ip assigned nic.

what reason behind it? understanding loopback software based routing, when local ip assigned nic involved, hardware involved in data path. true?

the hardware not involved.

as routing function knows destination address local, packet switched ingress path. incidentally why sniffers can't capture such packets, because hook happens after point of decision.


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