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Windows Loopback adapter not participating in local network


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#1 devprogrammer

devprogrammer

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Posted 29 June 2018 - 07:11 PM

I have created a Windows loop back adapter with 'Obtain IP address Automatically' enabled.
 

    ipconfig /all
    
    Ethernet adapter LL Address:
    
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Microsoft Loopback Adapter #3
       Physical Address. . . . . . . . . : XX-XX-XX-XX-XX-XX
       DHCP Enabled. . . . . . . . . . . : Yes
       Autoconfiguration Enabled . . . . : Yes
       Autoconfiguration IPv4 Address. . : 169.254.8.151(Preferred)
       Subnet Mask . . . . . . . . . . . : 255.255.0.0
       Default Gateway . . . . . . . . . :
       NetBIOS over Tcpip. . . . . . . . : Enabled

So I believe the adapter has taken a Link Local address. Now we have an embedded networking device in which I hard code the same Link Local address to test AUTO IP Link Local address functionality. This embedded code is developed using VC - so we can compile and run on same host where I have setup the Loopback adapter.

After bringing on the embedded networking code I see ARP request going out stating 'Who has 169.254.8.151' but I see no reply back from Loopback adapter that the IP is at XX-XX-XX-XX Hardware?

Should not the Loopback adapter reply back stating the same? What wrong or extra needs to be done to make this Loopback adapter reply back stating the same?



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