Better handling for missing NetDev.Device

- Closes: #1777

Overlays:
- ifcfg
- NetworkManager

Signed-off-by: Jonathon Anderson <janderson@ciq.com>

overlays/NetworkManager/rootfs/etc/NetworkManager/conf.d/ww4-unmanaged.ww

@@ -5,4 +5,15 @@
 plugins=keyfile
 
 [keyfile]
-unmanaged-devices={{ range $connection_id, $netdev := .NetDevs }}{{ if $netdev.Hwaddr }}except:mac:{{ $netdev.Hwaddr }},{{ end }}{{ if $netdev.Device }}except:interface-name:{{ $netdev.Device }},{{ end }}{{ end }}
+{{- $unmanaged := list }}
+{{- range $_, $netdev := .NetDevs }}
+{{- if $netdev.Hwaddr }}
+{{- $unmanaged = append $unmanaged (printf "except:mac:%s" $netdev.Hwaddr) }}
+{{- end }}
+{{- if $netdev.Device }}
+{{- $unmanaged = append $unmanaged (printf "except:interface-name:%s" $netdev.Device) }}
+{{- end }}
+{{- end }}
+{{- if $unmanaged }}
+unmanaged-devices={{ join "," $unmanaged }}
+{{- end }}

overlays/NetworkManager/rootfs/etc/NetworkManager/system-connections/ww4-managed.ww

@@ -4,7 +4,9 @@
 
 [connection]
 id={{ $devname }}
+{{- if $netdev.Device }}
 interface-name={{ $netdev.Device }}
+{{- end }}
 type={{ default "ethernet" (lower $netdev.Type) }}
 {{- if $netdev.Tags.master }}
 master={{ $netdev.Tags.master }}
@@ -78,7 +80,9 @@ ipaddr="{{ $netdev.Ipaddr6 }}"
 
 {{- if eq $netdev.Type "vlan" }}
 [vlan]
+{{- if $netdev.Device }}
 interface-name={{ $netdev.Device }}
+{{- end }}
 parent={{ $netdev.Tags.parent_device }}
 id={{ $netdev.Tags.vlan_id }}
 {{- end }}