Messages

1

General Discussion / Re: [DHCP] WAN can't get a lease

« on: February 10, 2024, 07:00:34 pm »

That's right, I think it could have been a good way to debug to put the static IP and gateway.
In my situation, after a reboot it still works, maybe it will not if I lose the lease... If it happens I will post a reply here

2

General Discussion / Re: [DHCP] WAN can't get a lease

« on: February 10, 2024, 04:06:50 pm »

Hi,

Thank you for your answer!

I "spoofed it" by using it as the WAN/VLAN10 mac and using it in the parameters sent to the DHCP server. To get the MAC address I just sniffed it from the original router when it was doing the DHCP requests (the internet connection was already activated).

I did spoof the serial number from my previous ONT like described on Hack GPON, it was written on the router itself (Fritzbox) or in the Web menu (I don't remember) and after spoofing it the green led became fixed.

I have no external ONT, it is included in the Fritzbox itself and I don't think I can use it as an ONT.

FYI the ISP is green.ch which is using Swisscom network but I can't find anything online if they are checking other parameters.

By the way, I plugged the fiber cable to the fritzbox and plugged it back to the Nokia, it worked and I have an IP now, but I did not change anything?! I will finish my configuration and check if it keeps working after a reboot

3

General Discussion / [DHCP] WAN can't get a lease

« on: February 10, 2024, 01:36:28 pm »

Hi all,

Context
I am replacing my router with my custom hardware . I bought a Nokia ONT XS-010X-Q, spoofed the Serial number of the legacy router and it works (fixed green LED).

Then, I bought a Lenovo m720Q (PCIe slot) to become my new router/firewall, I have installed OPNSense on it. I have configured my WAN to spoof the MAC address of the legacy router, blocked all the private traffic coming. After that, I created a VLAN 10 on it (accordingly to my ISP requirements), with the same MAC address and option 60 for the DHCP request.

Problem
My ISP is using DHCP FFTH, after some headaches because it was not working, I sniffed the DHCP traffic from the legacy router. I saw that it sends the hostname and a class/client identifier. I spoofed these 3 values on the DHCP request of my OPNSense and tried again, but it does not work... 

Indeed, the DHCP requests parameters are different, so I tried to configure the VLAN 10 DHCP config to send the same, but I can't figure out how to do it (can't find the good options name etc). Is it possible that the DHCP server does not reply because of that? The padding is different too, is it an issue?

You can see the two different requests:




Do you have any idea please?