Problem
Cannot install latest version of e-book management software "Calibre" via the installation script from the Calibre website.
Cause
- This seems to be a systemd bug.
- I cannot ping www.calibre-ebook.com
Solution
Temporarily disable IPv6 addressing.
To temporarily disable IPv6 address on Ubuntu-Mate 22.04 Jammy Jellyfish execute the following commands:
$ sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1
(terminal output =): net.ipv6.conf.all.disable_ipv6 = 1
then:
$ sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1
(terminal output =): net.ipv6.conf.default.disable_ipv6 = 1
Explanation
The above commands will temporarily disable IPv6, meaning that the settings will not persist after reboot. To re-enable IPv6 reboot your system or execute the above commands again however reverse the logic and change 1 to 0.
So I used:
$ sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1
$ sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1
- Then I ran the Calibre installation script. It worked as expected and installed the latest version of Calibre.
- Then I rebooted the computer via the terminal.
Once re-booted I was once again unable to ping www.calibre-ebook.com, i.e. IPv6 addressing was working again. I left the computer like this, i.e. I made no permanent change to IPv6 addressing.
Note:
I will use this workaround for "wget" commands until the systemd bug is fixed.
source: [https://linuxconfig.org/how-to-disable-ipv6-address-on-ubuntu-22-04-lts-jammy-jellyfish] 