NetworkManager stores new network profiles in keyfile format in the

/etc/NetworkManager/system-connections/ directory.

Previously, NetworkManager stored network profiles in ifcfg format

in this directory (/etc/sysconfig/network-scripts/). However, the ifcfg

format is deprecated. By default, NetworkManager no longer creates

new profiles in this format.

Connection profiles in keyfile format have many benefits. For example,

this format is INI file-based and can easily be parsed and generated.

Each section in NetworkManager keyfiles corresponds to a NetworkManager

setting name as described in the nm-settings(5) and nm-settings-keyfile(5)

man pages. Each key-value-pair in a section is one of the properties

listed in the settings specification of the man page.

If you still use network profiles in ifcfg format, consider migrating

them to keyfile format. To migrate all profiles at once, enter:

# nmcli connection migrate

This command migrates all profiles from ifcfg format to keyfile

format and stores them in /etc/NetworkManager/system-connections/.

Alternatively, to migrate only a specific profile, enter:

# nmcli connection migrate <profile_name|UUID|D-Bus_path>

For further details, see:

* nm-settings-keyfile(5)

* nmcli(1)