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  • My lo interface has the IP 127.0.0.1, and of course the v6 variant of ::1. Is that what you mean? Edit: Complete ip addr stats are here: pastebin.com/urXnVKp2 Commented Oct 22, 2013 at 17:35
  • Yes, that is what I meant. If your loopback was down, all your messages should move through your ethernet interface which will slow your system a lot. Commented Oct 23, 2013 at 7:35