IP address lease with DHCP Server denied

Russell Thompson 25 Reputation points
2023-03-04T00:20:05.4866667+00:00

Hi all,

I recently had my ISP change over from a PPOE service to a IPoE service. The day of this changeover, we lost all internet from our NBN box and our Netgear router. We switched to a different DHCP provider (Optus) who provided us with an entirely new NBN Box and a new Optus router .

We still received no internet and we had our NBN box and router replaced again. This has still not resolved the issue, after factory resetting the NBN box and the router multiple times.

By connecting my PC directly into the NBN box, I was able to get an internet connection with the following commands:

ipconfig /flushdns

ipconfig /release

ipconfig /renew

When I attempt to then connect the NBN box to the router, our internet is lost. I have checked my windows logs and found the event:

The IP address lease 27.99.12.241 for the network card with the address 0x18C04D896CBA has been denied by the DHCP server 192.168.0.1

The times we have found internet being active directly from the router is if we factory reset both the NBN box and the router, giving us approximately 1-2 minutes of connection.

I have attched my ipconfig details with this.

I have also changed all of the network cables and connections to ensure it is not a fault in terms of hardware.

I would very much appreciate some further trouble shooting steps or a possible solution to this issue.

Thank you!

ipconfig

Windows DHCP
Windows DHCP
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.DHCP: Dynamic Host Configuration Protocol (DHCP). A communications protocol that lets network administrators manage centrally and automate the assignment of Internet Protocol (IP) addresses in an organization's network.
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Accepted answer
  1. Dave Patrick 426K Reputation points MVP
    2023-03-04T02:15:38.6266667+00:00

    If you can ping the gateway but nothing further, you may need to reach out to the vendor for assistance.

    https://support.sagemcom.com/fr

    this forum is about windows DHCP service and your issues seems to center around your new hardware and or configuration.

    -

    --please don't forget to upvote and Accept as answer if the reply is helpful--


3 additional answers

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  1. Dave Patrick 426K Reputation points MVP
    2023-03-04T00:52:15.56+00:00

    I have attched my ipconfig details with this.

    Nothing here. Also something here could help.
    https://www.nbnco.com.au/residential/moving-home

    -

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  2. Dave Patrick 426K Reputation points MVP
    2023-03-04T01:16:22.87+00:00

    May need to check what's going on on the 192.168.0.1 box. As to the ipconfig /all having two adapters on the same network is basically a no-no. I'd get rid of one or the other. A tracert 8.8.8.8 will tell you where the connection drops, most likely the 192.168.0.1 box is problematic in some way.

    -

    --please don't forget to upvote and Accept as answer if the reply is helpful--


  3. Dave Patrick 426K Reputation points MVP
    2023-03-04T01:37:02.77+00:00

    You have an ethernet (.02) and a wifi (.03) adapter both on same subnet so windows will be confused with that. The (.01) box is handing out addresses but what subnet is the wan side on and does it get an address? probably not for some reason.

    --please don't forget to upvote and Accept as answer if the reply is helpful--