HAG Error during install

Hello,
I just received a HA Green box but it seems there is some problem ongoing during the installation.
I plugged the Box with Ethernet, then alimentation, and after some minutes, when I connect to homeassistant.local:8123, I can see on console the following error :

[supervisor.jobs] ‘Updater.fetch_data’ blocked from execution, no supervisor internet connection

What do I have to do to unblock this operation ?
Thank you in advance

Usually a DNS problem. What is your DHCP/DNS setup?

No DNS specific setup.
DHCP enable.
image

I’m in France, we have internet box with everything already setup…

Where do your DNS queries go?

My Internet Provider DNS is 109.0.66.20 / 109.0.66.10, and I don’t have the possibility to change it in my internet box

Ok, I did find the problem at the end. I have a router around, which had his DHCP server on too. I disable its DHCP server and everything is runing smooth now !
Thanks for the help