Voici le résultat de la commande qui est bien bavarde, je ne suis pas un spécialiste alors pour l'analyse ....
[j@PO3100 ~]$ nmcli connection show enp3s0
connection.id: enp3s0
connection.uuid: 71fcf9c8-bc58-30fc-bbbf-03822da821b7
connection.stable-id: --
connection.type: 802-3-ethernet
connection.interface-name: enp3s0
connection.autoconnect: oui
connection.autoconnect-priority: -999
connection.autoconnect-retries: -1 (default)
connection.auth-retries: -1
connection.timestamp: 1539716616
connection.read-only: non
connection.permissions: --
connection.zone: --
connection.master: --
connection.slave-type: --
connection.autoconnect-slaves: -1 (default)
connection.secondaries: --
connection.gateway-ping-timeout: 0
connection.metered: inconnu
connection.lldp: default
802-3-ethernet.port: --
802-3-ethernet.speed: 0
802-3-ethernet.duplex: --
802-3-ethernet.auto-negotiate: non
802-3-ethernet.mac-address: --
802-3-ethernet.cloned-mac-address: --
802-3-ethernet.generate-mac-address-mask:--
802-3-ethernet.mac-address-blacklist: --
802-3-ethernet.mtu: auto
802-3-ethernet.s390-subchannels: --
802-3-ethernet.s390-nettype: --
802-3-ethernet.s390-options: --
802-3-ethernet.wake-on-lan: default
802-3-ethernet.wake-on-lan-password: --
ipv4.method: manual
ipv4.dns: 80.10.246.2
ipv4.dns-search: --
ipv4.dns-options: ""
ipv4.dns-priority: 0
ipv4.addresses: 192.168.0.42/24
ipv4.gateway: 192.168.0.95
ipv4.routes: --
ipv4.route-metric: -1
ipv4.route-table: 0 (unspec)
ipv4.ignore-auto-routes: non
ipv4.ignore-auto-dns: non
ipv4.dhcp-client-id: --
ipv4.dhcp-timeout: 0 (default)
ipv4.dhcp-send-hostname: oui
ipv4.dhcp-hostname: --
ipv4.dhcp-fqdn: --
ipv4.never-default: non
ipv4.may-fail: oui
ipv4.dad-timeout: -1 (default)
ipv6.method: ignore
ipv6.dns: --
ipv6.dns-search: --
ipv6.dns-options: ""
ipv6.dns-priority: 0
ipv6.addresses: --
ipv6.gateway: --
ipv6.routes: --
ipv6.route-metric: -1
ipv6.route-table: 0 (unspec)
ipv6.ignore-auto-routes: non
ipv6.ignore-auto-dns: non
ipv6.never-default: non
ipv6.may-fail: oui
ipv6.ip6-privacy: -1 (inconnu)
ipv6.addr-gen-mode: stable-privacy
ipv6.dhcp-send-hostname: oui
ipv6.dhcp-hostname: --
ipv6.token: --
proxy.method: none
proxy.browser-only: non
proxy.pac-url: --
proxy.pac-script: --
GENERAL.NAME: enp3s0
GENERAL.UUID: 71fcf9c8-bc58-30fc-bbbf-03822da821b7
GENERAL.DEVICES: enp3s0
GENERAL.STATE: activé
GENERAL.DEFAULT: oui
GENERAL.DEFAULT6: non
GENERAL.SPEC-OBJECT: --
GENERAL.VPN: non
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/Settings/1
GENERAL.ZONE: --
GENERAL.MASTER-PATH: --
IP4.ADDRESS[1]: 192.168.0.42/24
IP4.GATEWAY: 192.168.0.95
IP4.ROUTE[1]: dst = 192.168.0.0/24, nh = 0.0.0.0, mt = 100
IP4.ROUTE[2]: dst = 0.0.0.0/0, nh = 192.168.0.95, mt = 100
IP4.DNS[1]: 80.10.246.2
IP6.ADDRESS[1]: fe80::8e89:a5ff:fec5:56bb/64
IP6.GATEWAY: --
IP6.ROUTE[1]: dst = ff00::/8, nh = ::, mt = 256, table=255
IP6.ROUTE[2]: dst = fe80::/64, nh = ::, mt = 256
[j@PO3100 ~]$
A+