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[SOLVED, user error] Proxmox not conncected to internet, but is reachable on LAN (sopuli.xyz)

submitted 7 months ago* (last edited 7 months ago) by [email protected] to c/[email protected]

46 comments fedilink hide all child comments

[SOLVED] Turns out I'm just a bigger moron than I thought. The MAC address of my server had accidentally been flagged in my router for black listing.

As the title says, my proxmox host is apparently not able to reach the internet anymore, not sure for how long this has been an issue, I rarely work on the host itself. It can ping other devices on my network just fine, and other devices can ping it. I can also SSH in to it and access the web interface. My VMs are connected to the internet without any issues. I don't need to access the host remotely/outside my home network, this is just for updating it etc.

I can't see the host under active devices in my router though.

I have been trying to figure why, but so far without any luck.

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[–] [email protected] 3 points 7 months ago (3 children)

This really sounds like a problem with the default route. What’s the output of ip route? That should give us some hints about what’s up.

[–] [email protected] 0 points 7 months ago* (last edited 7 months ago) (2 children)

this is the output of ip route.

192.168.68.1 is my router, 192.168.68.120 is the proxmox host

[–] [email protected] 1 points 7 months ago (1 children)

Cool. That looks right. Have you checked that the bridge is set up properly and that the router doesn’t have anything silly going on for that subnet?

PVE’s network settings are in /etc/network/interfaces and that’s where you can see how the bridge is set up.

It might be beneficial to know more about your network. Is this the only subnet or do you have a bunch of VLANs? Can other devices on the subnet ping outbound? Have you looked at the firewall on PVE?

[–] [email protected] 1 points 7 months ago

this is the contents of the interfaces file

I don't have anythiung seperated in to different VLANs, and i only use this single subnet. all other devices can ping outbound without issues.