Fixes #3315: Enable filtering devices/interfaces by multiple MAC addresses

netbox/dcim/forms.py

@@ -7,6 +7,8 @@ from django.contrib.postgres.forms.array import SimpleArrayField
 from django.core.exceptions import ObjectDoesNotExist
 from django.db.models import Q
 from mptt.forms import TreeNodeChoiceField
+from netaddr import EUI
+from netaddr.core import AddrFormatError
 from taggit.forms import TagField
 from timezone_field import TimeZoneFormField
 
@@ -76,6 +78,28 @@ class BulkRenameForm(forms.Form):
                 })
 
 
+#
+# Fields
+#
+
+class MACAddressField(forms.Field):
+    widget = forms.CharField
+    default_error_messages = {
+        'invalid': 'MAC address must be in EUI-48 format',
+    }
+
+    def to_python(self, value):
+        value = super().to_python(value)
+
+        # Validate MAC address format
+        try:
+            value = EUI(value.strip())
+        except AddrFormatError:
+            raise forms.ValidationError(self.error_messages['invalid'], code='invalid')
+
+        return value
+
+
 #
 # Regions
 #