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jg_spitfire avatar Ubuntu

Is this the correct way to solve the " temporary failure resolving 'ports.ubuntu.com' " issue in ubuntu 20.04.3 arm64?

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jg_spitfire

I am using the ubuntu base 20.04.3 arm64 to create the rootfs for my embedded Linux board, once I start the board I use sudo apt-get update and I get:

temporary failure resolving 'ports.ubuntu.com'

so in this post I found that when you have a network issue you could use sudo dpkg-reconfigure network-manager, I use it and I get:

ubuntu20043@localhost:~$ sudo dpkg-reconfigure network-manager

debconf: unable to initialize frontend: Dialog debconf: (No usable dialog-like program is installed, so the dialog based frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 76.) debconf: falling back to frontend: Readline debconf: unable to initialize frontend: Readline debconf: (Can't locate Term/ReadLine.pm in @INC (you may need to install the Term::ReadLine module) (@INC contains: /etc/perl /usr/local/lib/aarch64-linux-gnu/perl/5.30.0 /usr/local/share/perl/5.30.0 /usr/lib/aarch64-linux-gnu/perl5/5.30 /usr/share/perl5 /usr/lib/aarch64-linux-gnu/perl/5.30 /usr/share/perl/5.30 /usr/local/lib/site_perl /usr/lib/aarch64-linux-gnu/perl-base) at /usr/share/perl5/Debconf/FrontEnd/Readline.pm line 7.) debconf: falling back to frontend: Teletype find: ‘/etc/netplan’: No such file or directory

so it seems that the command does not work, but then I use sudo apt-get update and works without issues, so, is this the correct way to solve this?, I read the dpkg-reconfigure command documentation and says:

"It will ask configuration questions, much like when the package was first installed."

but I don´t get any questions and the issue is solved and I dont understand why

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