Re: Fedora 24: Network inoperable after a manual NetworkManager restart

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On 07/07/16 14:51, Rami Rosen wrote:
Hi, Joachim,

Apologies, I could only answer just now. The problem is, for sure,
that restarting the Network Manager did not create the "nameserver
192.168.100.1" entry in /etc/resolv.conf. This is the entry which is
solely responsible for DNS name resolving, and its omission deprives
you from getting an answer to your ping request you mentioned.

I am unsure as to what is the exact reason.
I would suggest the following three actions, to further try to
understand the issue:

Hi Rami,

Today morning, I filed a BZ:

https://bugzilla.redhat.com/show_bug.cgi?id=1353184

The BZ seems now to be under examination.

1) post here the content of /etc/NetworkManager/NetworkManager.conf

see attachment!

2) if this config file has "dns=dnsmasq" entry,  try to comment it and
restart NetworkManager, then see if /etc/resolv.conf is empty or not.
3) tell us if selinux is enabled on this machine (the output of
"getenforce" from the command line)

/etc/selinux/config has a line:

SELINUX=disabled

Kind regards and thanks for your efforts

Joachim Backes

--

Fedora release 24 (Twenty Four)
Kernel-4.6.3-300.fc24.x86_64


Joachim Backes <joachim.backes@xxxxxxxxxxxxxx>
http://www-user.rhrk.uni-kl.de/~backes/
# Configuration file for NetworkManager.
#
# See "man 5 NetworkManager.conf" for details.
#
# The directory /usr/lib/NetworkManager/conf.d/ can contain additional configuration
# snippets installed by packages. These files are read before NetworkManager.conf
# and have thus lowest priority.
# The directory /etc/NetworkManager/conf.d/ can contain additional configuration
# snippets. Those snippets override the settings from this main file.
#
# The files within one conf.d/ directory are read in asciibetical order.
#
# If /etc/NetworkManager/conf.d/ contains a file with the same name as
# /usr/lib/NetworkManager/conf.d/, the latter file is shadowed and thus ignored.
# Hence, to disable loading a file from /usr/lib/NetworkManager/conf.d/ you can
# put an empty file with the same name.
#
# If two files define the same key, the one that is read afterwards will overwrite
# the previous one.

[main]
#plugins=ifcfg-rh,ibft


[logging]
# When debugging NetworkManager, enabling debug logging is of great help.
#
# Logfiles contain no passwords and little sensitive information. But please
# check before posting the file online. You can also personally hand over the
# logfile to a NM developer to treat it confidential. Meet us on #nm on freenode.
# Please post full logfiles except minimal modifications of private data.
#
# You can also change the log-level at runtime via
#   $ nmcli general logging level TRACE domains ALL
# However, usually it's cleaner to enable debug logging
# in the configuration and restart NetworkManager so that
# debug logging is enabled from the start.
#
# You will find the logfiles in syslog, for example via
#   $ journalctl -u NetworkManager
#
#level=TRACE
#domains=ALL
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