I have spent a lot of time looking for a solution to my problem. Everything I've tried hasn't worked so far.

From what I understand, this is an internet connection problem or a DNS issue. I followed this tutorial to setup Ubuntu Server on my new Raspberry Pi 4. I'm using wifi and Ethernet just to be sure.

Some have suggested to add nameserver in /etc/resolv.conf. Not only it doesn't work, but every time I sudo reboot, the file content turn back to initial.

I even tried sudo ufw allow out 53,113,123/udp. No positive result.

Does anyone have an other idea that can help me solve this problem ?

  • 1
    Ubuntu Server uses Netplan (and cloudinit) to manage network settings, you shouldn't tamper with the config files manually.
    – tttapa
    Aug 3, 2021 at 23:25
  • @tttapa This issue persists even without tampering with network config files. I'm connected via ethernet and I still have this issue. It seems like Ubuntu doesn't setup ethernet correctly in the default case? Another Pi on the same switch (different OS) can connect fine.
    – weberc2
    Oct 15, 2021 at 15:51
  • I should also add that the same hardware was able to access the Internet just fine with a different image (same SD card, same Pi, same cables, same switch, etc). Also, strangely while the Internet doesn't seem to work, I can ssh in from LAN.
    – weberc2
    Oct 15, 2021 at 15:59


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