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FritzBox 7530 as main YouFibre router

Hi, I have the YF500 and a static ip. I'd like to connect my FritzBox 7530 directly to the ONT (instead of via the supplied Arris router)

I can daisy chain the routers OK but I'd prefer a direct connection. (less devices, simpler topology etc)

I've read https://aoakley.com/articles/2022-10-05-youfibre-technical.php#static

Ive :
- set the FritzBox to receive internet via ethernet on LAN1 as a DHCP client.
- Set the DHCP host name to 'dsldevice' (same as supplied router)
- spoofed the Arris Mac Address,

then power cycled the ONT, but it will not connect.

There is no option to set the DHCP Client Identifier (Option 61) on this router - but I've seen other people mention that they have this combo working.


Is there anything else to do or should I just contact YF support?

[UPDATE]`

I changed the IPv4 Connection from DHCPv4 to a Static IP and put in my static IP , subnet and public DNS and it works.
As I have a static IP from the ISP - I'm going to stick with this for now.

Maybe the DHCP lease will expire upstream and I'll try it again tomorrow.
 
Last edited:
A quick update:
After a short while connecting via the manual static IP setup stopped working . Then when I switched it back to DHCP it started working again.

So the main thing is to wait for the DHCP lease to expire. (probably anything up to an hour based ?) - during that time the static IP might work for a bit.
 
Are you sure the MAC cloning is set to the right address? In that you cloned the WAN port MAC address from the old router and not one of the LAN MACs or Wi-Fi MAC?

I did this with my UDM SE (cloned the WAN MAC of the YouFibre-supplied Eero router) and got my static IP via DHCP straight away, no other DHCP options or client hostname changes needed.
 
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Also I just ran a packet trace on my router and it turns out YouFibre's DHCP lease time is indeed only 1 hour.
Lease-Time (51), length 4: 3600
 
Are you sure the MAC cloning is set to the right address? In that you cloned the WAN port MAC address from the old router and not one of the LAN MACs or Wi-Fi MAC?

I did this with my UDM SE (cloned the WAN MAC of the YouFibre-supplied Eero router) and got my static IP via DHCP straight away, no other DHCP options or client hostname changes needed.
Hi, Yup - That was one of my suspicions so I checked it several times.

I used the MAC printed on the side label of the Arris, and it was also displayed on the Arris Broadband connection page.

I also checked the Arris config and could see two different MACs for the 2.4 and 5GHz networks - but did not 100% rule out that is was not the Arris LAN mac - but fairly sure it wasn't :)
 
You could connect a laptop manually, spoof the MAC of the original router then do a ipconfig /release to save you the hours wait.
 
I have a Fritzbox 7530 connected to YouFibre (with a static IP address).

It works perfectly and has done for months. It sounds like you've set things up correctly but there must be something adrift.

Could it be in the connection settings rather than the MAC spoofing? I don't recall setting a DHCP hostname. Where is that setting?

K
 
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