IP address 0.0.0.1

Is IP address 0.0.0.1 recognized and accepted by Win7?

From the test, it seems the answers is No.

Can someone explain why because the same IP is working with XP. Thx!

Hi WeiZha,

 

1.       What test did you perform?

2.       Could you provide a screenshot of the IP address?

How do I post a screen shot on this forum:

http://answers.microsoft.com/en-us/windows/forum/windows_7-security/how-do-i-post-a-screen-shot-on-this-forum/c86de820-c620-401c-a804-9f6337cd3053

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Actually the problem was found with GPON 7342-FTTU(the fixed access product of Alcatel-lucent). In GPON, there is a feature called ARP proxy which is implemented on the Line card (the HW element is used to connect customer's PC through ONT and fiber cable):

Network--GPON--(fiber)--ONT--(ethernet cable/wifi)--PC.

One of the function of ARP proxy is to send ARP request message to PC periodically to make sure if PC is still alive according to the ARP table maintained on Line card. This ARP table keeps the record of mappingship with both PC's IP and PC's MAC.

We found when sender IP address in ARP request message is "0.0.0.1" (this sender IP can be configured in GPON, "sender" here means Line card which is only L2 device, so we manually assign a specific IP to it), PC (Win7 OS) will not respond. That makes Line card think PC is dead or disconnected from ONT. And finally it may cause some service impact to the end-user (can't browse the internet...).

However 0.0.0.1 can work with XP as we tested. PC (with XP) will respond to ARP request when sender IP is 0.0.0.1.

BTW, I can't open "skydrive.live.com" in my Shanghai office. No idea why.

Here below I attach some conetents (includng sender IP) cut from ARP request message. Hope that will be helpful as well:

 

No.                         Time                       Source                      Destination         Protocol Info
123 2012-04-06 14:52:20.563679 Alcatel-_33:30:aa     Broadcast             ARP
Who has 14.40.23.211?  Tell 0.0.0.1

Frame 123: 60 bytes on wire (480 bits), 60 bytes captured (480 bits)
Ethernet II, Src: Alcatel-_33:30:aa (00:17:cc:33:30:aa), Dst: Broadcast
..........

Address Resolution Protocol (request)
    Hardware type: Ethernet (0x0001)
    Protocol type: IP (0x0800)
    Hardware size: 6
    Protocol size: 4
    Opcode: request (0x0001)
    [Is gratuitous: False]
    Sender MAC address: Alcatel-_33:30:aa (00:17:cc:33:30:aa) //Line card MAC
    Sender IP address: 0.0.0.1 (0.0.0.1) //Line card IP
    Target MAC address: GoodWayI_4e:fb:b6 (00:50:b6:4e:fb:b6) //PC MAC
    Target IP address: 14.40.23.211 (14.40.23.211) //PC IP
  

 

 

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Last updated October 14, 2020 Views 3,014 Applies to: