[Ubuntu] Unclaimed state of Network interface enp2s0

keunuk@keunuk:~$ 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     inet6 ::1/128 scope host noprefixroute        valid_lft forever preferred_lft forever 2  wlp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000     link/ether 90:2e:1c:42:0a:c2 brd ff:ff:ff:ff:ff:ff     inet 172.20.10.8/28 metric 600 brd 172.20.10.15 scope global dynamic wlp1s0        valid_lft 3472sec preferred_lft 3472sec     inet6 2001:2d8:2182:32b6:922e:1cff:fe42:ac2/64 scope global mngtmpaddr noprefixroute        valid_lft forever preferred_lft forever     inet6 fe80::922e:1cff:fe42:ac2/64 scope link        valid_lft forever preferred_lft forever

 

First of all, We have to check what server has interface

keunuk@keunuk:/var/log/apt$ sudo lshw -C network   *-network        description: Wireless interface        product: Wireless 7260        vendor: Intel Corporation        physical id: 0        bus info: pci@0000:01:00.0        logical name: wlp1s0        version: bb        serial: 90:2e:1c:42:0a:c2        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless        configuration: broadcast=yes driver=iwlwifi driverversion=6.8.0-41-generic firmware=17.3216344376.0 7260-17.ucode ip=172.20.10.8 latency=0 link=yes multicast=yes wireless=IEEE 802.11        resources: irq:133 memory:80900000-80901fff   *-network        description: Ethernet interface        product: RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller        vendor: Realtek Semiconductor Co., Ltd.        physical id: 0        bus info: pci@0000:02:00.0        logical name: enp2s0        version: 2b        serial: 00:e0:4c:6d:ca:83        size: 1Gbit/s        capacity: 1Gbit/s        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation        configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.052.01-NAPI duplex=full ip=10.17.52.101 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s        resources: irq:17 ioport:3000(size=256) memory:80804000-80804fff memory:80800000-80803fff

 

 

Maybe. I would say my server doesn't have right driver. So I will install right Driver on Server. 

First of all, Server can not connect internet through wire network. so i will Configure of Wifi in Ubuntu

sudo vi /etc/netplan/50-cloud-init.yaml # This file is generated from information provided by the datasource.  Changes # to it will not persist across an instance reboot.  To disable cloud-init's # network configuration capabilities, write a file # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following: # network: {config: disabled} network:     version: 2     wifis:       wlp1s0:         dhcp4: true         access-points:           "SSID":             password: "password"     ethernets:       enp2s0:         dhcp4: false         addresses:           - 10.17.52.101/24         gateway4: 10.17.52.1 Apply below command after above configure keunuk@keunuk:~$ sudo netplan apply

 

 

sudo apt install r8168-dkms dkms build-essential

Start-Date: 2024-11-12  03:49:57 Commandline: apt install r8168-dkms dkms build-essential Requested-By: keunuk (1000) Install: libgcc-13-dev:amd64 (13.2.0-23ubuntu4, automatic), libstdc++-13-dev:amd64 (13.2.0-23ubuntu4, automatic), libalgorithm-merge-perl:amd64 (0.08-5, automatic), libgomp1:amd64 (14-20240412-0ubuntu1, automatic), g++-13:amd64 (13.2.0-23ubuntu4, automatic), gcc-13:amd64 (13.2.0-23ubuntu4, automatic), build-essential:amd64 (12.10ubuntu1), libctf-nobfd0:amd64 (2.42-4ubuntu2, automatic), gcc-x86-64-linux-gnu:amd64 (4:13.2.0-7ubuntu1, automatic), libtsan2:amd64 (14-20240412-0ubuntu1, automatic), cpp:amd64 (4:13.2.0-7ubuntu1, automatic), g++:amd64 (4:13.2.0-7ubuntu1, automatic), gcc:amd64 (4:13.2.0-7ubuntu1, automatic), libhwasan0:amd64 (14-20240412-0ubuntu1, automatic), libalgorithm-diff-perl:amd64 (1.201-1, automatic), libbinutils:amd64 (2.42-4ubuntu2, automatic), libfakeroot:amd64 (1.33-1, automatic), cpp-x86-64-linux-gnu:amd64 (4:13.2.0-7ubuntu1, automatic), binutils-x86-64-linux-gnu:amd64 (2.42-4ubuntu2, automatic), bzip2:amd64 (1.0.8-5.1build0.1, automatic), g++-x86-64-linux-gnu:amd64 (4:13.2.0-7ubuntu1, automatic), libcc1-0:amd64 (14-20240412-0ubuntu1, automatic), cpp-13-x86-64-linux-gnu:amd64 (13.2.0-23ubuntu4, automatic), libmpc3:amd64 (1.3.1-1build1, automatic), libfile-fcntllock-perl:amd64 (0.22-4ubuntu5, automatic), dpkg-dev:amd64 (1.22.6ubuntu6.1, automatic), libasan8:amd64 (14-20240412-0ubuntu1, automatic), make:amd64 (4.3-4.1build2, automatic), libctf0:amd64 (2.42-4ubuntu2, automatic), lto-disabled-list:amd64 (47, automatic), cpp-13:amd64 (13.2.0-23ubuntu4, automatic), binutils-common:amd64 (2.42-4ubuntu2, automatic), libitm1:amd64 (14-20240412-0ubuntu1, automatic), libdpkg-perl:amd64 (1.22.6ubuntu6.1, automatic), libsframe1:amd64 (2.42-4ubuntu2, automatic), g++-13-x86-64-linux-gnu:amd64 (13.2.0-23ubuntu4, automatic), libgprofng0:amd64 (2.42-4ubuntu2, automatic), libisl23:amd64 (0.26-3build1, automatic), libquadmath0:amd64 (14-20240412-0ubuntu1, automatic), libubsan1:amd64 (14-20240412-0ubuntu1, automatic), liblsan0:amd64 (14-20240412-0ubuntu1, automatic), libalgorithm-diff-xs-perl:amd64 (0.04-8build3, automatic), gcc-13-x86-64-linux-gnu:amd64 (13.2.0-23ubuntu4, automatic), gcc-13-base:amd64 (13.2.0-23ubuntu4, automatic), r8168-dkms:amd64 (8.052.01-1ubuntu1), binutils:amd64 (2.42-4ubuntu2, automatic), fakeroot:amd64 (1.33-1, automatic), libatomic1:amd64 (14-20240412-0ubuntu1, automatic), dkms:amd64 (3.0.11-1ubuntu13) End-Date: 2024-11-12  03:50:31

 

 

 

install r8168 after above commad and then we can check below state. we expect we will see enp2s0 interface

keunuk@keunuk:/var/log/apt$ 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     inet6 ::1/128 scope host noprefixroute        valid_lft forever preferred_lft forever 2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000     link/ether 00:e0:4c:6d:ca:83 brd ff:ff:ff:ff:ff:ff     inet 10.17.52.101/24 brd 10.17.52.255 scope global enp2s0        valid_lft forever preferred_lft forever     inet6 fe80::2e0:4cff:fe6d:ca83/64 scope link        valid_lft forever preferred_lft forever 3: wlp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000     link/ether 90:2e:1c:42:0a:c2 brd ff:ff:ff:ff:ff:ff     inet 172.20.10.8/28 metric 600 brd 172.20.10.15 scope global dynamic wlp1s0        valid_lft 2743sec preferred_lft 2743sec     inet6 2001:2d8:2182:32b6:922e:1cff:fe42:ac2/64 scope global mngtmpaddr noprefixroute        valid_lft forever preferred_lft forever     inet6 fe80::922e:1cff:fe42:ac2/64 scope link        valid_lft forever preferred_lft forever

 

 

It's hard to google related to above sysmptm. But i did. 

Now Let's install proxmox 8.2. 

 

Thanks