What is Loopback device??

[Eric Brunson]

loopback has always been there, its ipaddress is 127.0.0.1, right? It 
loops back to the machine. Don't try to disable it, disabling it will 
break things.

I have a Thinkpad X30, the Intel 82801 is your IO controller for USB, 
IDE, AC’97, SMBus, PCI, ACPI, LAN, and LPC.

Truls Gulbrandsen wrote:
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> Hi,
> After yesterdays yum update I got a new network device named: Loopback
> device; which is enabled and activated by default.
>
> System-config-network says it cannot be disabled nor changed.
>
> I also got another harware installed named:Intel Corporation 82801;
> device: dev2542.
>
> I have FC5t2 installed to an IBM TP T30 with a Cisco 350 pcmcia wlan 
> card.
>
> Why these new settings and are they correct?
>
> Regards,
> Truls
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