MBCDN

Der Standard Netzwerkdienst auf Ubuntu ist systemd-networkd.

# systemctl status systemd-networkd
● systemd-networkd.service - Network Configuration
     Loaded: loaded (/usr/lib/systemd/system/systemd-networkd.service; enabled; preset: enabled)
     Active: active (running) since Wed 2025-11-12 16:19:14 UTC; 6h ago
TriggeredBy: ● systemd-networkd.socket
       Docs: man:systemd-networkd.service(8)
             man:org.freedesktop.network1(5)
   Main PID: 556 (systemd-network)
     Status: "Processing requests..."
      Tasks: 1 (limit: 9436)
   FD Store: 0 (limit: 512)
     Memory: 3.5M (peak: 4.0M)
        CPU: 136ms
     CGroup: /system.slice/systemd-networkd.service
             └─556 /usr/lib/systemd/systemd-networkd
 
Nov 12 16:19:13 ubuntu systemd[1]: Starting systemd-networkd.service - Network Configuration...
Nov 12 16:19:14 ubuntu systemd-networkd[556]: lo: Link UP
Nov 12 16:19:14 ubuntu systemd-networkd[556]: lo: Gained carrier
Nov 12 16:19:14 ubuntu systemd-networkd[556]: Enumeration completed
Nov 12 16:19:14 ubuntu systemd[1]: Started systemd-networkd.service - Network Configuration.
Nov 12 16:19:14 ubuntu systemd-networkd[556]: ens4: Configuring with /run/systemd/network/10-netplan-ens4.network.
Nov 12 16:19:14 ubuntu systemd-networkd[556]: ens4: Link UP
Nov 12 16:19:14 ubuntu systemd-networkd[556]: ens4: Gained carrier
Nov 12 16:19:15 ubuntu systemd-networkd[556]: ens4: Gained IPv6LL

Die IP Konfiguration wird mit netplan gesteuert.

# Beispiel
network:
  version: 2
  renderer: networkd # Ist Standard, muss man nicht angeben
  ethernets:
    ens4:
      addresses:
        - 172.21.0.2/24
      gateway4: 172.21.0.1
      nameservers:
        addresses:
          - 8.8.8.8

Standard systemd-journald, rsyslog scheint aber auch von Haus aus drauf zu sein.