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Does it mean that the Loopback device handles the request like ping localhost ?

If so, there should be at least one device that's loopback,but seems none of my two network device is Loopback:

rpcap://\Device\NPF_{45D5ADA0-095E-49F3-BEA1-E8754390F2D4}
        Description: Network adapter 'Intel(R) PRO/Wireless 2200BG Network Conne
ction (Microsoft's Packet Scheduler) ' on local host
        Loopback: no

rpcap://\Device\NPF_{783C5467-4026-473C-86A0-5E5A3708C624}
        Description: Network adapter 'Realtek RTL8169/8110 Family Gigabit Ethern
et NIC                                 (Microsoft's Packet Scheduler) ' on local
 host
        Loopback: no

Can someone clarify all this?

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migrated from stackoverflow.com May 5 '10 at 15:10

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2 Answers 2

None of your physical devices will be a loopback device.

"In TCP/IP a loopback device is a virtual network interface implemented in software only and not connected to any hardware, but which is fully integrated into the computer system's internal network infrastructure. Any traffic that a computer program sends to the loopback interface is immediately received on the same interface."

http://en.wikipedia.org/wiki/Loopback

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I'm not sure, but I have understood that loopback device is not a real device, but a virtual one. It's purpose is to be a fake device that can quickly transfer signals, streams, etc. from a machine to itself.

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