diff --git a/django/utils/ipv6.py b/django/utils/ipv6.py
index 4f433d1..6e60959 100644
      
        
          
        
        
          
            | a | b | def clean_ipv6_address(ip_str, unpack_ipv4=False, | 
        
        
          
            | 54 | 54 |  | 
          
            | 55 | 55 | for index in range(len(hextets)): | 
          
            | 56 | 56 | # Remove leading zeroes | 
        
        
          
            | 57 |  | hextets[index] = hextets[index].lstrip('0') | 
          
            |  | 57 | if "." not in hextets[index]: | 
          
            |  | 58 | hextets[index] = hextets[index].lstrip('0') | 
        
        
          
            | 58 | 59 | if not hextets[index]: | 
          
            | 59 | 60 | hextets[index] = '0' | 
          
            | 60 | 61 |  | 
        
      
    
    
      
      diff --git a/tests/model_fields/tests.py b/tests/model_fields/tests.py
index 70f039e..e444110 100644
      
        
          
        
        
          
            | a | b | class GenericIPAddressFieldTests(test.TestCase): | 
        
        
          
            | 904 | 904 | with self.assertRaises(ValidationError): | 
          
            | 905 | 905 | form_field.clean('127.0.0.1') | 
          
            | 906 | 906 |  | 
        
        
          
            |  | 907 | def test_mixed_ipv46(self): | 
          
            |  | 908 | """ | 
          
            |  | 909 | Test that GenericIPAddressField will accept a mixed IPv4 and IPv6 in all cases. See #26378. | 
          
            |  | 910 | """ | 
          
            |  | 911 | unpack_ip_field = models.GenericIPAddressField(null=False, protocol='both', unpack_ipv4=True) | 
          
            |  | 912 | not_unpack_ip_field = models.GenericIPAddressField(protocol='both', unpack_ipv4=False) | 
          
            |  | 913 | unpack_ip_field.clean('::ffff:0.0.0.0', None) | 
          
            |  | 914 | not_unpack_ip_field.clean('::ffff:0.0.0.0', None) | 
          
            |  | 915 | not_unpack_ip_field.clean('::ffff:0.255.255.255', None) | 
          
            |  | 916 | not_unpack_ip_field.clean('::ffff:1.0.0.0', None) | 
          
            |  | 917 |  | 
          
            |  | 918 |  | 
        
        
          
            | 907 | 919 | def test_null_value(self): | 
          
            | 908 | 920 | """ | 
          
            | 909 | 921 | Null values should be resolved to None in Python (#24078). |