Can't explain better, but I found root cause. So, full steps to reproduce:
1) sudo service NetworkManager stop 2) sudo wpa_supplicant -c /etc/wpa_supplicant/wired.conf -i eth1 -D wired 3) sudo dhclient eth1 4) see in output "ls: cannot access '/run/systemd/resolved.conf.d/isc-dhcp-v6-***.conf': No such file or directory" 5) check ifconfig that only IPv4 address was received Work-around: Disable IPv6 for Ethernet ** Summary changed: - gnome-control-center reports Ethernet Connection Failure while Connection success + dhclient can't obtain IPv6 addr -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1850159 Title: dhclient can't obtain IPv6 addr Status in network-manager package in Ubuntu: Incomplete Bug description: gnome-control-center reports Ethernet Connection Failure with TLS Authentication 1) Ubuntu 19.10 2) 1:3.34.1-1ubuntu2 3) Show Connected for Wired Connection 4) Show Disconnected for Wired Connection ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gnome-control-center 1:3.34.1-1ubuntu2 ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1 Uname: Linux 5.3.0-19-generic x86_64 ApportVersion: 2.20.11-0ubuntu8 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Oct 28 17:06:43 2019 InstallationDate: Installed on 2019-08-01 (88 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) SourcePackage: gnome-control-center UpgradeStatus: Upgraded to eoan on 2019-10-28 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1850159/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
