[SOLVED] confusion about linux guest internet connection

D

doomiiniikk

New Member
May 26, 2024
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I have, not much, prior experience with networking and linux and no prior experience with proxmox.
During set up of my ubuntu guest I was able to update fine no issues, indicating that I had access to the internet.
After that I have not been able to access the internet, I do have a LAN ip and I can ssh into the guest, I can ping it, no problem.
I have tried searching the forum but came to no concrete fix.
What am I missing and how do I fix this?

Code: 
# from the guest
$ ping 8.8.8.8
ping: connect: Network is unreachable

I can ping my gateway as well

In the guest, I have changed some things to get a static IP but I doubt this is the reason as I had the same issue on another system which I installed proxmox on first.
I disabled the cloud-init thingy by adding config:disable to a network cfg, it is now disabled.

Code: 
$ cat /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg.disabled
network: {config:disabled}

I added this because I still got a DHCP address
Code: 
$ cat /etc/netplan/99_config.yaml
network:
    version:
        2
    ethernets:
        ens18:
            addresses:
                - 10.1.1.60/24
            routes:
                - to: 10.1.1.1
                  via: 10.1.1.1
            nameservers:
                search: [hoponto]
                addresses: [10.1.1.60]

I deleted the config file that enabled dhcp in netplan, filename started with `50-`
Code: 
$ ls /etc/netplan/
99_config.yaml

I don't know if vmbr0 should be visible from the guest, but at least the network device is visible.

Code: 
$ lspci
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.2 USB controller: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] (rev 01)
00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
00:02.0 VGA compatible controller: Device 1234:1111 (rev 02)
00:03.0 Unclassified device [00ff]: Red Hat, Inc. Virtio memory balloon
00:05.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge
00:12.0 Ethernet controller: Red Hat, Inc. Virtio network device
00:1e.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge
00:1f.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge
01:01.0 SCSI storage controller: Red Hat, Inc. Virtio SCSI

Code: 
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: ens18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether bc:24:11:07:e5:bc brd ff:ff:ff:ff:ff:ff
    altname enp0s18
    inet 10.1.1.60/24 brd 10.1.1.255 scope global ens18
       valid_lft forever preferred_lft forever
    inet6 fe80::be24:11ff:fe07:e5bc/64 scope link
       valid_lft forever preferred_lft forever

interfaces does not exist in the guest..
Code: 
$ ls /etc/network/interfaces
ls: cannot access '/etc/network/interfaces': No such file or directory
 
would that be the routes: - to: 10.1.1.1?
I did end up just creating a new VM and setting up the network connection properly in the install which ended me with this config
Code: 
network:
    ethernets:
        ens18:
            addresses:
            - 10.1.1.60/24
            nameservers:
                addresses:
                - 8.8.8.8
                - 1.1.1.1
                search: []
            routes:
            -   to: default
                via: 10.1.1.1
    version: 2
which I now can access the internet with
Code: 
$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=57 time=37.6 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=57 time=35.8 ms
...
 
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