Ping 8.8.8.8: Destination Net Unreachable

I am using a ethernet connection but from past few days internet is not working on my device.
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how can I resolve this issue?

There isn’t enough information here to begin to address what the issue might be. Is the computer connected to a router? Do you get a connection if you connect directly to the modem, thereby ruling out router configuration issues?

Please read:

Welcome to the Manjaro forum. Here is another good starting point.

I am using a lan connection of my building so I am not connected to any router directly.
One more thing, the internet is working fine on my other machine which has MS-windows.

Few days ago it was working fine on this machine as well but now it is not, is it possible that I might have changed network settings and forgot to change them back because one day I was trying to send files over wired connection in between two devices.

Below is my inix output

System:
  Kernel: 6.5.13-7-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
    clocksource: tsc available: hpet,acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.5-x86_64
    root=UUID=b2093c5a-8153-45b9-a2e3-d02ae92eaf25 rw quiet splash
    resume=UUID=2225189c-fc69-422c-8c97-d63dc418f29c udev.log_priority=3
  Desktop: KDE Plasma v: 5.27.10 tk: Qt v: 5.15.11 wm: kwin_x11 vt: 2
    dm: SDDM Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Laptop System: ASUSTeK product: VivoBook_ASUSLaptop X409DA_M409DA
    v: 1.0 serial: <superuser required>
  Mobo: ASUSTeK model: X409DA v: 1.0 serial: <superuser required>
    UEFI: American Megatrends v: X409DA.306 date: 10/08/2021
Battery:
  ID-1: BAT0 charge: 22.7 Wh (95.8%) condition: 23.7/32.1 Wh (74.0%)
    power: 7.7 W volts: 7.8 min: 7.8 model: ASUSTeK ASUS Battery type: Li-ion
    serial: N/A status: discharging cycles: 567
CPU:
  Info: model: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx bits: 64
    type: MT MCP arch: Zen/Zen+ note: check gen: 1 level: v3 note: check
    built: 2019 process: GF 12nm family: 0x17 (23) model-id: 0x18 (24)
    stepping: 1 microcode: 0x8108109
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 384 KiB desc: d-4x32 KiB; i-4x64 KiB L2: 2 MiB desc: 4x512 KiB L3: 4 MiB
    desc: 1x4 MiB
  Speed (MHz): avg: 1296 high: 1400 min/max: 1400/2100 boost: enabled
    scaling: driver: acpi-cpufreq governor: schedutil cores: 1: 1222 2: 1400
    3: 1223 4: 1400 5: 1222 6: 1400 7: 1245 8: 1261 bogomips: 33550
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: retbleed mitigation: untrained return thunk; SMT vulnerable
  Type: spec_rstack_overflow mitigation: Safe RET
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, STIBP:
    disabled, RSB filling, PBRSB-eIBRS: Not affected
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: AMD Picasso/Raven 2 [Radeon Vega Series / Radeon Mobile Series]
    vendor: ASUSTeK driver: amdgpu v: kernel arch: GCN-5 code: Vega
    process: GF 14nm built: 2017-20 pcie: gen: 3 speed: 8 GT/s lanes: 16 ports:
    active: eDP-1 empty: HDMI-A-1 bus-ID: 03:00.0 chip-ID: 1002:15d8
    class-ID: 0300 temp: 44.0 C
  Device-2: IMC Networks USB2.0 VGA UVC WebCam driver: uvcvideo type: USB
    rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 3-2.2:5
    chip-ID: 13d3:5a11 class-ID: 0e02
  Display: x11 server: X.Org v: 21.1.10 compositor: kwin_x11 driver: X:
    loaded: amdgpu unloaded: modesetting,radeon alternate: fbdev,vesa
    dri: radeonsi gpu: amdgpu display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22")
    s-diag: 582mm (22.93") monitors: <missing: xrandr>
  Monitor-1: eDP-1 model: ChiMei InnoLux 0x14e5 built: 2018 res: 1920x1080
    dpi: 158 gamma: 1.2 size: 309x173mm (12.17x6.81") diag: 354mm (13.9")
    ratio: 16:9 modes: max: 1920x1080 min: 640x480
  API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
    device: 1 drv: swrast surfaceless: drv: radeonsi x11: drv: radeonsi
    inactive: gbm,wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 23.1.9-manjaro1.1
    glx-v: 1.4 direct-render: yes renderer: AMD Radeon Vega 8 Graphics (raven
    LLVM 16.0.6 DRM 3.54 6.5.13-7-MANJARO) device-ID: 1002:15d8
    memory: 1.95 GiB unified: no
  API: Vulkan v: 1.3.274 layers: N/A device: 0 type: integrated-gpu name: AMD
    Radeon Vega 8 Graphics (RADV RAVEN) driver: mesa radv v: 23.1.9-manjaro1.1
    device-ID: 1002:15d8 surfaces: xcb,xlib
Audio:
  Device-1: AMD Raven/Raven2/Fenghuang HDMI/DP Audio driver: snd_hda_intel
    v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16 bus-ID: 03:00.1
    chip-ID: 1002:15de class-ID: 0403
  Device-2: AMD ACP/ACP3X/ACP6x Audio Coprocessor driver: snd_pci_acp3x
    v: kernel alternate: snd_rn_pci_acp3x, snd_pci_acp5x, snd_pci_acp6x,
    snd_acp_pci, snd_rpl_pci_acp6x, snd_pci_ps, snd_sof_amd_renoir,
    snd_sof_amd_rembrandt pcie: gen: 3 speed: 8 GT/s lanes: 16 bus-ID: 03:00.5
    chip-ID: 1022:15e2 class-ID: 0480
  Device-3: AMD Family 17h/19h HD Audio vendor: ASUSTeK driver: snd_hda_intel
    v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16 bus-ID: 03:00.6
    chip-ID: 1022:15e3 class-ID: 0403
  API: ALSA v: k6.5.13-7-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.0.0 status: off with: pipewire-media-session
    status: active tools: pw-cli
  Server-3: PulseAudio v: 16.1 status: active with: pulseaudio-alsa
    type: plugin tools: pacat,pactl
Network:
  Device-1: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 bus-ID: 01:00.0 chip-ID: 8086:24fd class-ID: 0280
  IF: wlp1s0 state: down mac: <filter>
  Device-2: Realtek RTL8152 Fast Ethernet Adapter driver: r8152 type: USB
    rev: 2.1 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-1.4:3
    chip-ID: 0bda:8152 class-ID: 0000 serial: <filter>
  IF: enp3s0f3u1u4 state: up speed: 100 Mbps duplex: full mac: <filter>
Bluetooth:
  Device-1: Intel Bluetooth wireless interface driver: btusb v: 0.8 type: USB
    rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 3-2.1:4 chip-ID: 8087:0a2b
    class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Drives:
  Local Storage: total: 1.36 TiB used: 131.28 GiB (9.4%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Crucial model: CT500P3SSD8
    size: 465.76 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
    lanes: 4 tech: SSD serial: <filter> fw-rev: P9CR30A temp: 25.9 C
    scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 vendor: Toshiba model: MQ04ABF100
    size: 931.51 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: HDD rpm: 5400 serial: <filter> fw-rev: 0D scheme: GPT
Partition:
  ID-1: / raw-size: 80 GiB size: 78.19 GiB (97.74%) used: 11.87 GiB (15.2%)
    fs: ext4 dev: /dev/nvme0n1p1 maj-min: 259:1
  ID-2: /boot/efi raw-size: 512 MiB size: 511 MiB (99.80%)
    used: 296 KiB (0.1%) fs: vfat dev: /dev/nvme0n1p4 maj-min: 259:4
  ID-3: /home raw-size: 375.26 GiB size: 368.3 GiB (98.15%)
    used: 119.41 GiB (32.4%) fs: ext4 dev: /dev/nvme0n1p3 maj-min: 259:3
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 10 GiB used: 0 KiB (0.0%) priority: -2
    dev: /dev/nvme0n1p2 maj-min: 259:2
Sensors:
  System Temperatures: cpu: 45.5 C mobo: N/A gpu: amdgpu temp: 45.0 C
  Fan Speeds (rpm): cpu: 0
Info:
  Processes: 259 Uptime: 8m wakeups: 0 Memory: total: 6 GiB available: 5.74 GiB
  used: 2.24 GiB (39.0%) Init: systemd v: 254 default: graphical
  tool: systemctl Compilers: gcc: 13.2.1 clang: 16.0.6 Packages: pm: pacman
  pkgs: 1234 libs: 350 tools: pamac pm: flatpak pkgs: 0 Shell: Zsh v: 5.9
  default: Bash v: 5.2.21 running-in: konsole inxi: 3.3.31

What should I do to fix the internet issue?
Please help me solve it.

Inxi is showing that the Ethernet state is up. Have you tried the troubleshooting guide noted above? Maybe you have a DNS issue? Check your Ethernet connection settings in Network Manager. I am running Xfce, but right click network manager applet here and Enable Networking is checked.
You could try edit connections, remove the connection and recreate the Ethernet connection and reboot, maybe?

Are you using firewall or other security software. If so, try disabling and see if that is causing the issue.

Also, if you get up and running, note that kernel 6.5 is End of Life (EOL). It would be a good idea to switch to a LTS kernel, either 6.1 or 6.6 and make certain that your system is fully updated.

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:facepalm:

Okay thanks for the help.
It is working fine now, although I didn’t do much other than deleting the connection and restarting the system.

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