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+---
+categories: system sysadmin systemd
+title: Howto systemd-networkd
+...
+
+* Manpages : <https://manpages.debian.org/bookworm/systemd/systemd-networkd.8.en.html>
+
+`systemd-networkd` est un composant de [systemd](/HowtoSystemd.md) dédié à la configuration du réseau.
+
+## Installation
+
+Aucune action nécessaire, `systemd-networkd` (et les outils en cli comme `networkctl`) sont présent dans le packet systemd, déjà présent par défaut sur Debian.
+
+```
+# networkctl --version
+systemd 252 (252.12-1~deb12u1)
++PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 -PWQUALITY +P11KIT +QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD -BPF_FRAMEWORK -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified
+
+# networkctl 
+WARNING: systemd-networkd is not running, output will be incomplete.
+
+IDX LINK      TYPE     OPERATIONAL SETUP    
+  1 lo        loopback -           unmanaged
+  2 enp0s31f6 ether    -           unmanaged
+  3 wwan0     wwan     -           unmanaged
+  4 wlp4s0    wlan     -           unmanaged
+
+4 links listed.
+```
+
+## Configuration
+
+Il existe un fichier de configuration pour des options "globales" (`/etc/systemd/networkd.conf`), mais la configuration des réseaux et des liens se fait dans des fichiers dans `/etc/systemd/network/`.
+Il existe trois types de configuration : 
+
+* Fichiers en `*.network` > Configuration de réseaux <https://manpages.debian.org/bookworm/systemd/systemd.network.5.en.html>
+* Fichiers en `* .netdev` > Configuration d'interfaces virtuelles (bridge, bond, ...) <https://manpages.debian.org/bookworm/systemd/systemd.netdev.5.en.html>
+* Fichiers en `*.link` > Confiuration d'une interface à sa connexion (par udev) - En général, on n'en a pas besoin <https://manpages.debian.org/bookworm/udev/systemd.link.5.en.html>
+
+
+
+### Exemple : IP Statique
+
+Exemple de configuration. Une IP (v4 et v6) statique pour une interface réseau donnée, identifiée par son addresse MAC : 
+
+```
+# cat /etc/systemd/network/wan.network
+[Match]
+MACAddress=52:54:00:00:00:00
+
+[Network]
+DHCP=no
+Address=192.0.2.33/24
+Gateway=192.0.2.254
+Address=2001:db8::33/48
+Gateway=2001:db8::ffff
+```
+
+Résultat 
+
+```
+# neworkctl
+# networkctl 
+IDX LINK TYPE     OPERATIONAL SETUP     
+  1 lo   loopback carrier     unmanaged
+  2 ens3 ether    routable    configured
+
+2 links listed.
+
+
+# networkctl status 
+●        State: routable                       
+  Online state: online                         
+       Address: 192.0.2.33 on ens3
+                2001:db8::33 on ens3
+                fe80::5054:ff:3615:3615 on ens3
+       Gateway: 192.0.2.254 on ens3
+                2001:db8::ffff on ens3
+
+Aug 03 14:42:32 hostname systemd-networkd[304]: lo: Link UP
+Aug 03 14:42:32 hostname systemd-networkd[304]: lo: Gained carrier
+Aug 03 14:42:32 hostname systemd-networkd[304]: Enumeration completed
+Aug 03 14:42:32 hostname systemd-networkd[304]: ens3: Configuring with /etc/systemd/network/wan.network.
+Aug 03 14:42:32 hostname systemd[1]: Started systemd-networkd.service - Network Configuration.
+Aug 03 14:42:32 hostname systemd-networkd[304]: ens3: Link UP
+Aug 03 14:42:32 hostname systemd[1]: Starting systemd-networkd-wait-online.service - Wait for Network to be Configured...
+Aug 03 14:42:33 hostname systemd-networkd[304]: ens3: Gained carrier
+Aug 03 14:42:34 hostname systemd-networkd[304]: ens3: Gained IPv6LL
+Aug 03 14:42:46 hostname systemd[1]: Finished systemd-networkd-wait-online.service - Wait for Network to be Configured.
+
+
+# networkctl status ens3
+● 2: ens3                                                                      
+                     Link File: /usr/lib/systemd/network/99-default.link
+                  Network File: /etc/systemd/network/wan.network
+                         State: routable (configured)
+                  Online state: online                                         
+                          Type: ether
+                          Path: pci-0000:00:03.0
+                        Driver: virtio_net
+                        Vendor: Red Hat, Inc.
+                         Model: Virtio network device
+             Alternative Names: enp0s3
+              Hardware Address: 52:54:00:00:00:00
+                           MTU: 1500 (min: 68, max: 65535)
+                         QDisc: fq_codel
+  IPv6 Address Generation Mode: eui64
+      Number of Queues (Tx/Rx): 1/1
+              Auto negotiation: no
+                       Address: 192.0.2.33
+                                2001:db8::33
+                                fe80::5054:ff:3615:3615
+                       Gateway: 192.0.2.254
+                                2001:db8::ffff
+             Activation Policy: up
+           Required For Online: yes
+
+Aug 03 14:41:32 hostname systemd-networkd[304]: ens3: Configuring with /etc/systemd/network/wan.network.
+Aug 03 14:41:32 hostname systemd-networkd[304]: ens3: Link UP
+Aug 03 14:41:33 hostname systemd-networkd[304]: ens3: Gained carrier
+Aug 03 14:41:34 hostname systemd-networkd[304]: ens3: Gained IPv6LL
+```
+
+
+## Administration
+
+## Plomberie
+
+## FAQ
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