Fixes #1071: Protect assigned circuit termination when an interface is deleted

netbox/circuits/migrations/0008_circuittermination_interface_protect_on_delete.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2017-04-19 17:17
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('circuits', '0007_circuit_add_description'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='circuittermination',
+            name='interface',
+            field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='circuit_termination', to='dcim.Interface'),
+        ),
+    ]