installation issue - vlan interface not defined[

[NABDSOLUTIONS]

I am encountering an error while trying to configure a VLAN using netplan. The specific issue is in the file /etc/netplan/00-vlan.yaml.

To Reproduce:

Edit the file /etc/netplan/00-vlan.yaml with a text editor.
Attempt to define a VLAN (e.g., VLAN 10) with a specific interface name (e.g., ens2) in the link: option.
Save the changes and run the command sudo netplan apply.
Observe the following error message:
/etc/netplan/00-vlan.yaml:9:13: Error in network definition: vlan10: interface 'ens2' is not defined
Expected Behavior:

The netplan configuration should be applied successfully, and the specified VLAN should be created using the designated interface.

Environment:

OS: [Specify your Operating System - e.g., Ubuntu 22.04]
Kernel Version: [You can find this by running uname -r in your terminal]
Additional Context:

I have verified that the interface name mentioned in the error message (ens2 in this example) might not be the actual interface name. I used the ip addr command to list network interfaces and identify potential candidates (e.g., enpXsY).
I've also checked the file permissions for /etc/netplan/00-vlan.yaml to ensure they are appropriate (ideally owner-writable only).

[agauttam]

Hi,

it is a network configuration issue, Once you configure the network using netcfg.yaml & 99-vlan.yaml file, it will fix your all error related to network.

[NABDSOLUTIONS]

Hi , we believe the configuration is right ,

(Reading database ... 108988 files and directories currently installed.)
Preparing to unpack .../vlan_2.0.5ubuntu5_all.deb ...
Unpacking vlan (2.0.5ubuntu5) ...
Setting up vlan (2.0.5ubuntu5) ...
Processing triggers for man-db (2.10.2-1) ...
NEEDRESTART-VER: 3.5
NEEDRESTART-KCUR: 5.15.0-46-generic
NEEDRESTART-KEXP: 5.15.0-46-generic
NEEDRESTART-KSTA: 1
2024/05/13 09:38:12 Generating vlan config
2024/05/13 09:38:12 Applying vlan config
/etc/netplan/99-vlan.yaml:9:13: Error in network definition: vlan10: interface 'eth0' is not defined
link: eth0
^
exit status 78

---

root@logs:~# cat /etc/netplan/99-vlan.yaml

network:
version: 2
renderer: networkd

vlans:
vlan10:
id: 10
link: eth0
addresses: [10.21.199.3/24]

---

root@logs:~# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 94.77.xx.xx netmask 255.255.255.0 broadcast 94.77.xx.xx
ether 00:16:3e:a3:53:e8 txqueuelen 1000 (Ethernet)
RX packets 90016 bytes 110052814 (110.0 MB)
RX errors 0 dropped 1687 overruns 0 frame 0
TX packets 51582 bytes 4682714 (4.6 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ip addr
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
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:16:3e:a3:53:e8 brd ff:ff:ff:ff:ff:ff
altname enp0s2
altname ens2
inet 94.77.xx.xx/24 brd 94.77.xx.xx scope global eth0
valid_lft forever preferred_lft forever

[agauttam]

Configure your interface like the below example: replace x.x.x.x to ip address and gateway

01-netcfg.yaml

network:
version: 2
renderer: NetworkManager
ethernets:
eth0:
dhcp4: no
addresses: [x.x.x.x/x]
routes:
- to: default
via: x.x.x.x
nameservers:
addresses: [8.8.8.8, 8.8.4.4]

[c3s4rfred]

Hi, @NABDSOLUTIONS, this is a space for UTMStack discussions, if the issue is related, please, try to perform the installation using our guides and system requirements, the latest installer version should do the network configuration for you, if any errors occur during the installation, provide more logs to us, to help you.
Best regards