Public bug reported: The connectivity for a connection results in limited when behind a proxy for NetworkManager.
$ sudo nmcli general STATE CONNECTIVITY WIFI-HW WIFI WWAN-HW WWAN connected (site only) limited enabled enabled enabled enabled $ sudo nmcli networking connectivity check limited I have configured my proxy in both '/etc/environment' and via the GUI under 'Settings'->'Network'->'Network Proxy'->'Automatic'. After this is set I can do an HTTP GET against the URL/URI you have configured in the '/usr/lib/NetworkManager/conf.d/20-connectivity- ubuntu.conf' file. $ curl -I http://connectivity-check.ubuntu.com/ HTTP/1.1 204 No Content Date: Thu, 03 May 2018 09:01:34 GMT Server: Apache/2.4.18 (Ubuntu) X-NetworkManager-Status: online X-Cache: MISS from proxy.example.com X-Cache-Lookup: MISS from proxy.example.com:3128 Via: 1.1 proxy.example.com (squid/3.3.8) Connection: keep-alive $ env|grep -i proxy auto_proxy=http://proxy.example.com/auto https_proxy=http://proxy.example.com:3128 http_proxy=http://proxy.example.com:3128 But network connectivity still fails to use the proxy. I assume that the 'network-manager-config-connectivity-ubuntu' package is used for this feature after reading the following output. $ dpkg -S /usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf network-manager-config-connectivity-ubuntu: /usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf If I remove the '/usr/lib/NetworkManager/conf.d/20-connectivity- ubuntu.conf' file the connectivity check succeeds or I don't get limited connectivity at least. -- $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04 LTS Release: 18.04 Codename: bionic $ uname -a Linux lnxhplap2 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ dpkg -l|grep network-manager ii network-manager 1.10.6-2ubuntu1 amd64 network management framework (daemon and userspace tools) ii network-manager-config-connectivity-ubuntu 1.10.6-2ubuntu1 all NetworkManager configuration to enable connectivity checking ii network-manager-gnome 1.8.10-2ubuntu1 amd64 network management framework (GNOME frontend) ii network-manager-pptp 1.2.6-1 amd64 network management framework (PPTP plugin core) ii network-manager-pptp-gnome 1.2.6-1 amd64 network management framework (PPTP plugin GNOME GUI) -- Note: I have used "proxy.example.com" as substitute for our proxy server in this bug report for privacy reasons. ** Affects: network-manager (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1768789 Title: connectivity results in limited when behind proxy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1768789/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs