Unable to get outside internet connection. on fresh install

T

Thedan667

New Member
Jan 6, 2024
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Hello all,
I just set up a fresh install of proxmox on a Dell 3040m.

I am able to connect to the server from my local network. Once logged in, I try to install Debian LXC for a helper script, and I get curl: (6) Could not resolve host: raw.githubusercontent.com. I have then tried to ping other 8.8.8.8 and 1.1.1.1 I get ping: connect: Network is unreachable. I have checked my DNS I have server 1 set to 1.1.1.1 and 2 set to 8.8.8.8.
Screenshot 2025-08-01 192707.png
I only have one ethernet port to connect to.

I haven't yet touched my xfinity router so it possible something in there is causing a problem?


when I try ifreload -a I get
Screenshot 2025-08-01 192120.png

IP -a & IP a

Screenshot 2025-08-01 192251.png

after checking that I am in fact logged in I get this for /etc/network/interfaces
Screenshot 2025-08-01 192507.png

lastly apt update

Screenshot 2025-08-01 192601.png


I am planning on leaving this here overnight it is currently 1927 PST I will be back on tomorrow morning. If you have any other commands or settings you want/wish to see, please ask away. I will get back to them as soon as I can. Thank you guys so much for your help and support!
 
After looking into my xfinity modem I do have the proxmox server marked to the correct static IP. However, Xfinity shows it as offline, but the MAC address is the same. hopefully this helps.
 
Try this via keyboard and monitor to see what kind of ip is valid for your setup and what the gateway is
Bash: 
ifdown vmbr0; dhclient -v
We can tell you more after seeing the config file mentioned above.
 
Impact said:
Try this via keyboard and monitor to see what kind of ip is valid for your setup and what the gateway is
Bash: 
ifdown vmbr0; dhclient -v
We can tell you more after seeing the config file mentioned above.
Click to expand...
well ifdown vmbr0; dhclient -v seems to break the server and after I can no longer do anything with the server I have to hard restart it. I will try a 3rd time

Screenshot 2025-08-02 082631.png

so on my 3rd time I entered a command IP a to make sure I could enter commands seen here after I enter ifdown vmbr0; dhclient -v the server crashes and wont respond to anything.1754148729028.png
 
I specifically said to do this via keyboard and monitor. As in directly connected to the node. You didn't share the config file either.
 
Last edited:
Impact said:
I specifically said to do this via keyboard and monitor. As in directly connected to the node. You didn't share the config file either.
Click to expand...
Im sorry I didnt read that part..

when I move my server I don't have an extra eithernet cord. I did this 2 different ways the first picture is without the ethernet connected the 2nd pic is of the server connected to ethernet

1st

IMG_8239.jpg

2nd



IMG_8240.jpg


IMG_8241.jpg
 
Your settings are very wrong. You use an invalid gateway and also set the node and gateway ip to the same value.
Your gateway should be 10.0.0.1. You should also reserve the PVE node's ip in your router's DHCP settings to avoid conflicts.
1754155477863.png
 
Last edited:
Impact said:
Your settings are very wrong. You use an invalid gateway and also set the node and gateway ip to the same value.
Your gateway should be 10.0.0.1. You should also reserve the PVE node's ip in your router's DHCP settings to avoid conflicts.
View attachment 88769
Click to expand...
I have no idea how that happened, but I'm glad it sounds like a quick fix. I'm sorry to ask, but this is above my knowledge. Can you help me fix this? Using nano /etc/network/interfaces, I see this. which is different from 10.0.0.99 and 10.0.0.1, so I don't want to change anything in case I make it worse. If I'm doing this wrong I apologize. IMG_8246.jpg
 
Last edited:
There's not much more I can say. Change the gateway to above and then run ifreload -av.
 
By quote to you mean don’t use reply?

Ok I’ll try that when I get home! Thank you very much for your help.
 
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i'm facing similar issue. i spent two days looking at this forum and youtube trying to solve my issue.
I can't seem to get my ip to even show up under ip a
i'm able to use the web app only if i set vmbr0 to dhcp and it gives a random ip and submask to login. but if i set things to static and give it my ip and giveway and mask. no ui access
i'm really lost at this point. sorry for hijacking your thread :(
 
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