old_contents: from django.db import models
  
  
  from helpers import models as helpermodels
  
  
  # Create your models here.
  class Networks(models.Model):
      POLICIES = (
              ('reject', 'Reject'),
              ('drop', 'Ignore'),
              ('accept', 'Accept'),
              )
      name = models.CharField(max_length=30)
      interface = models.CharField(max_length=10)
      ip_range = helpermodels.IPNetworkField()
      policy = models.CharField("default policy", choices=POLICIES, max_length=6)
  
  
new_contents: from django.db import models
  
  
  from helpers.models import IPNetworkField
  
  
  # Create your models here.
  class Network(models.Model):
      POLICIES = (
              ('reject', 'Reject'),
              ('drop', 'Ignore'),
              ('accept', 'Accept'),
              )
      name = models.CharField(max_length=30)
      interface = models.CharField(max_length=10)
      ip_range = IPNetworkField()
      policy = models.CharField("default policy", choices=POLICIES, max_length=6)
  
  
subject: Fix Network model name; better import