Could those having the issue try if the deb on https://launchpad.net/~ubuntu-desktop/+archive/ubuntu/ppa/+sourcepub/10307594/+listing-archive-extra fixes their issue (I don't know enough ab out IPv6 to have those commands return something else than 'network unreachable')
Could those having the issue try if the deb on https:/ /launchpad. net/~ubuntu- desktop/ +archive/ ubuntu/ ppa/+sourcepub/ 10307594/ +listing- archive- extra fixes their issue (I don't know enough ab out IPv6 to have those commands return something else than 'network unreachable')