is using the loopback address equivalent to the local ip address?

Question

Using the loopback address 127.0.0.1 will bypass the NIC. If the local machine has some other ip address assigned to it, will traffic from that machine to the same machine using said ip address hit the nic? if it does, what performance impact does that have, if any?

What operating system? Windows 3.11 with Trumpet Winsock? – Ben Jun 07 '12 at 16:36 — Ben, Jun 07 '12 at 16:36

score 0 · Answer 1 · answered Jun 07 '12 at 16:38

0

No, it won't touch the NIC. Performance impact will be negligible.

Unless you are running a really dumb os, of course.

answered Jun 07 '12 at 16:38

Ben

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What about Windows XP? Thanks – eve Dec 06 '12 at 10:37
@eve, Windows XP is not **that** dumb. – Ben Dec 06 '12 at 10:49

is using the loopback address equivalent to the local ip address?

1 Answers1