Can you provide your NetworkManager.conf as well as your
/etc/network/interface file? Normally these two files should look like
this:
1. NetworkManager.conf:
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
2. interfaces:
auto lo
iface lo inet loopback
That is to say, have dnsmasq and ifupdown plugins enabled and set
[ifupdown] to "managed=false", at the same time don't include anything
other than "lo" in /etc/network/interfaces.
** Changed in: network-manager (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1658921
Title:
NetworkManager does not manage wired connection
Status in network-manager package in Ubuntu:
Incomplete
Bug description:
NetworkManager does not manage my wired eth0 connection, no matter how
I set /etc/network/interfaces or
/etc/NetworkManager/NetworkManager.conf
Using ubuntu 16.04, /etc/network/interfaces only managed lo, and
[ifupdown] section of NetworkManager.conf had set managed=false.
With these same settings, after upgrading to ubuntu 16.10, eth0
appears as unmanaged in nm-applet.
If I modify /etc/network/interfaces and add
auto eth0
iface eth0 inet dhcp
And set managed=true in NetworkManager.conf [ifupdown] section, eth0
is still unmanaged despite it does get an IP from DHCP server.
This is happening in my five computers (two laptops and three
desktops).
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