Fixes #6695: Fix exception when importing device type with invalid front port definition

docs/release-notes/version-2.11.md

@@ -17,7 +17,8 @@
 * [#6640](https://github.com/netbox-community/netbox/issues/6640) - Disallow numeric values in custom text fields
 * [#6652](https://github.com/netbox-community/netbox/issues/6652) - Fix exception when adding components in bulk to multiple devices
 * [#6676](https://github.com/netbox-community/netbox/issues/6676) - Fix device/VM counts per cluster under cluster type/group views
-* [#6680](https://github.com/netbox-community/netbox/issues/6680) - Allow setting custom field values for VM interfaces on intial creation
+* [#6680](https://github.com/netbox-community/netbox/issues/6680) - Allow setting custom field values for VM interfaces on initial creation
+* [#6695](https://github.com/netbox-community/netbox/issues/6695) - Fix exception when importing device type with invalid front port definition
 
 ---
 

netbox/dcim/forms.py

@@ -1878,8 +1878,7 @@ class FrontPortTemplateImportForm(ComponentTemplateImportForm):
     )
     rear_port = forms.ModelChoiceField(
         queryset=RearPortTemplate.objects.all(),
-        to_field_name='name',
-        required=False
+        to_field_name='name'
     )
 
     class Meta:

netbox/dcim/models/device_component_templates.py

@@ -290,6 +290,8 @@ class FrontPortTemplate(ComponentTemplateModel):
     def clean(self):
         super().clean()
 
+        try:
+
             # Validate rear port assignment
             if self.rear_port.device_type != self.device_type:
                 raise ValidationError(
@@ -304,6 +306,9 @@ class FrontPortTemplate(ComponentTemplateModel):
                     )
                 )
 
+        except RearPortTemplate.DoesNotExist:
+            pass
+
     def instantiate(self, device):
         if self.rear_port:
             rear_port = RearPort.objects.get(device=device, name=self.rear_port.name)