modelformset_factory generating "object has no attribute instance" error

[Farhan Khan]

I am trying to display a modelformset_factory in a view, but am running 
into this error and unable to figure out why.

builtins.AttributeError
AttributeError: 'IPAddressForm' object has no attribute 'instance'

This seems to happen when I include this in my view: {{ 
ipaddressformset.as_table }}
This is generated from a modelformset_factory, which is from the model 
IPAddress and form IPAddressForm. 

I do not know what is causing this error! The full stack dump from the WSGI 
driver is here, but my code dump below might be more useful:
https://gist.github.com/anonymous/ce858b89fe56929977915d0613f147c2

My view:

@login_required(login_url='/auth/')

def manualimport(request):

    IPAddressFormSet = modelformset_factory(IPAddress, form=IPAddressForm, 
exclude=())

    ipaddressformset = IPAddressFormSet( queryset=IPAddress.objects.none(), 
prefix='role' )

    if request.method == 'POST':

        assetform = AssetForm(request.POST)

        print("POST request")

        pass

    else:

        assetform = AssetForm()

    context = {'full_name': request.user.username,

               'assetform': assetform,

               'ipaddressformset': ipaddressformset}

    return render(request, 'asset/manualimport.html', context)

My form:

class IPAddressForm(forms.Form):

    address = forms.ChoiceField(required=True)

    new_address = forms.CharField(required=False)

    def __init__(self, *args, **kwargs):

        choices = ( ('','---'), (0,'Not Listed') )

        ipaddresses = 
IPAddress.objects.filter(component__isnull=True).distinct()

        for ipaddress in ipaddresses:

            choices = choices + ((ipaddress.id, ipaddress.address),)

        super(IPAddressForm, self).__init__(*args, **kwargs)

        self.fields['address'].choices = choices

        self.fields['address'].initial = ''


My template:

{{ ipaddressformset.management_form }}

{{ ipaddressformset.as_table }}


It appears to error out when the second line in the template is displayed. 
I do not know what the error is or what is causing it.

Please assist! Thanks.

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