Mon fichier resolv.conf :
# Generated by NetworkManager
search home
nameserver 192.168.1.1
nameserver fe80::f282:61ff:fee2:d0d2%enp0s13f0u1u1
nameserver 2a01:cb19:90f7:6d00:f282:61ff:fee2:d0d2
J’ai commenté les lignes, mis les DNS de google et fait un sudo systemctl restart NetworkManager
, mais toujours le même problème 
Pour info, le status de NetworkManager me retourne ça :
NetworkManager.service - Network Manager
Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: disabled)
Drop-In: /usr/lib/systemd/system/NetworkManager.service.d
└─NetworkManager-ovs.conf
Active: active (running) since Thu 2022-03-24 09:59:13 CET; 50s ago
Docs: man:NetworkManager(8)
Main PID: 112925 (NetworkManager)
Tasks: 3 (limit: 38238)
Memory: 4.3M
CPU: 76ms
CGroup: /system.slice/NetworkManager.service
└─112925 /usr/bin/NetworkManager --no-daemon
mars 24 09:59:13 manu-framework NetworkManager[112925]: <info> [1648112353.7183] device (enp0s13f0u1u1): Activation: successful, device activated.
mars 24 09:59:13 manu-framework NetworkManager[112925]: <info> [1648112353.7353] manager: NetworkManager state is now CONNECTED_GLOBAL
mars 24 09:59:13 manu-framework NetworkManager[112925]: <info> [1648112353.8603] dhcp6 (enp0s13f0u1u1): activation: beginning transaction (timeout in 45 seconds)
mars 24 09:59:13 manu-framework NetworkManager[112925]: <info> [1648112353.8607] policy: set 'Connexion filaire 1' (enp0s13f0u1u1) as default for IPv6 routing and DNS
mars 24 09:59:13 manu-framework NetworkManager[112925]: <info> [1648112353.8745] dhcp6 (enp0s13f0u1u1): state changed new lease
mars 24 09:59:15 manu-framework NetworkManager[112925]: <info> [1648112355.6723] device (docker0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'assume')
mars 24 09:59:15 manu-framework NetworkManager[112925]: <info> [1648112355.6738] device (docker0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'assume')
mars 24 09:59:15 manu-framework NetworkManager[112925]: <info> [1648112355.6739] device (docker0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'assume')
mars 24 09:59:15 manu-framework NetworkManager[112925]: <info> [1648112355.6742] device (docker0): Activation: successful, device activated.
mars 24 09:59:19 manu-framework NetworkManager[112925]: <info> [1648112359.6591] manager: startup complete
Bonne journée !