For non-dhcp interfaces, ignore carrier

src/idmslinux_installer/plugins/config_system/systemd_networkd.py

@@ -108,6 +108,9 @@ class ConfigSystemdNetworkd(Plugin):
             # Check if this interface uses DHCP
             if 'dhcp' in config:
                 network_file.write(f'DHCP=yes\n')
+            else:
+                network_file.write(f'ConfigureWithoutCarrier=yes\n')
+                network_file.write(f'IgnoreCarrierLoss=yes\n')
 
             # Check if we have IP addresses
             if 'ipv4address' in config: