IP address error when used with Eventlet gunicorn worker class

[modbender]

Recently switched from gevent to eventlet due to some worker timeouts in gunicorn and django-ip restrict app stopped working. On urls where iprestrict is used, I get the following traceback:

 Traceback (most recent call last):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/core/validators.py", line 254, in validate_ipv4_address
Feb 11 20:27:45 project gunicorn[21670]:     ipaddress.IPv4Address(value)
Feb 11 20:27:45 project gunicorn[21670]:   File "/usr/lib/python3.6/ipaddress.py", line 1284, in __init__
Feb 11 20:27:45 project gunicorn[21670]:     self._ip = self._ip_int_from_string(addr_str)
Feb 11 20:27:45 project gunicorn[21670]:   File "/usr/lib/python3.6/ipaddress.py", line 1114, in _ip_int_from_string
Feb 11 20:27:45 project gunicorn[21670]:     raise AddressValueError('Address cannot be empty')
Feb 11 20:27:45 project gunicorn[21670]: ipaddress.AddressValueError: Address cannot be empty
Feb 11 20:27:45 project gunicorn[21670]: During handling of the above exception, another exception occurred:
Feb 11 20:27:45 project gunicorn[21670]: Traceback (most recent call last):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/core/validators.py", line 266, in validate_ipv46_address
Feb 11 20:27:45 project gunicorn[21670]:     validate_ipv4_address(value)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/core/validators.py", line 256, in validate_ipv4_address
Feb 11 20:27:45 project gunicorn[21670]:     raise ValidationError(_('Enter a valid IPv4 address.'), code='invalid')
Feb 11 20:27:45 project gunicorn[21670]: django.core.exceptions.ValidationError: ['Enter a valid IPv4 address.']
Feb 11 20:27:45 project gunicorn[21670]: During handling of the above exception, another exception occurred:
Feb 11 20:27:45 project gunicorn[21670]: Traceback (most recent call last):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/core/validators.py", line 269, in validate_ipv46_address
Feb 11 20:27:45 project gunicorn[21670]:     validate_ipv6_address(value)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/core/validators.py", line 261, in validate_ipv6_address
Feb 11 20:27:45 project gunicorn[21670]:     raise ValidationError(_('Enter a valid IPv6 address.'), code='invalid')
Feb 11 20:27:45 project gunicorn[21670]: django.core.exceptions.ValidationError: ['Enter a valid IPv6 address.']
Feb 11 20:27:45 project gunicorn[21670]: During handling of the above exception, another exception occurred:
Feb 11 20:27:45 project gunicorn[21670]: Traceback (most recent call last):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/contrib/gis/geoip2/base.py", line 158, in _check_query
Feb 11 20:27:45 project gunicorn[21670]:     validate_ipv46_address(query)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/core/validators.py", line 271, in validate_ipv46_address
Feb 11 20:27:45 project gunicorn[21670]:     raise ValidationError(_('Enter a valid IPv4 or IPv6 address.'), code='invalid')
Feb 11 20:27:45 project gunicorn[21670]: django.core.exceptions.ValidationError: ['Enter a valid IPv4 or IPv6 address.']
Feb 11 20:27:45 project gunicorn[21670]: During handling of the above exception, another exception occurred:
Feb 11 20:27:45 project gunicorn[21670]: Traceback (most recent call last):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/eventlet/support/greendns.py", line 425, in resolve
Feb 11 20:27:45 project gunicorn[21670]:     use_network=use_network)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/eventlet/support/greendns.py", line 380, in query
Feb 11 20:27:45 project gunicorn[21670]:     return end()
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/eventlet/support/greendns.py", line 359, in end
Feb 11 20:27:45 project gunicorn[21670]:     raise result[1]
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/eventlet/support/greendns.py", line 340, in step
Feb 11 20:27:45 project gunicorn[21670]:     a = fun(*args, **kwargs)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/dns/resolver.py", line 898, in query
Feb 11 20:27:45 project gunicorn[21670]:     raise NoNameservers(request=request, errors=errors)
Feb 11 20:27:45 project gunicorn[21670]: dns.resolver.NoNameservers: All nameservers failed to answer the query server. IN A: Server 127.0.0.53 UDP port 53 answered SERVFAIL
Feb 11 20:27:45 project gunicorn[21670]: dns.resolver.NoNameservers: All nameservers failed to answer the query server. IN A: Server 127.0.0.53 UDP port 53 answered SERVFAIL
Feb 11 20:27:45 project gunicorn[21670]: During handling of the above exception, another exception occurred:
Feb 11 20:27:45 project gunicorn[21670]: Traceback (most recent call last):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
Feb 11 20:27:45 project gunicorn[21670]:     response = get_response(request)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/utils/deprecation.py", line 93, in __call__
Feb 11 20:27:45 project gunicorn[21670]:     response = self.process_request(request)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/accounts/middleware.py", line 45, in process_request
Feb 11 20:27:45 project gunicorn[21670]:     if self.restrictor.is_restricted(url, client_ip):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/iprestrict/restrictor.py", line 16, in is_restricted
Feb 11 20:27:45 project gunicorn[21670]:     if rule.matches_url(url) and rule.matches_ip(ip):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/iprestrict/models.py", line 229, in matches_ip
Feb 11 20:27:45 project gunicorn[21670]:     match = typed_ip_group(self.ip_group).matches(ip)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/iprestrict/models.py", line 124, in matches
Feb 11 20:27:45 project gunicorn[21670]:     country_code = geoip.country_code(ip) or NO_COUNTRY
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/iprestrict/geoip.py", line 47, in country_code
Feb 11 20:27:45 project gunicorn[21670]:     return self._geoip.country_code(ip)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/contrib/gis/geoip2/base.py", line 175, in country_code
Feb 11 20:27:45 project gunicorn[21670]:     enc_query = self._check_query(query, city_or_country=True)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/django/contrib/gis/geoip2/base.py", line 160, in _check_query
Feb 11 20:27:45 project gunicorn[21670]:     query = socket.gethostbyname(query)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/eventlet/support/greendns.py", line 550, in gethostbyname
Feb 11 20:27:45 project gunicorn[21670]:     rrset = resolve(hostname)
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/eventlet/support/greendns.py", line 434, in resolve
Feb 11 20:27:45 project gunicorn[21670]:     raise EAI_NODATA_ERROR
Feb 11 20:27:45 project gunicorn[21670]: socket.gaierror: [Errno -2] Name or service not known
Feb 11 20:27:45 project gunicorn[21670]: During handling of the above exception, another exception occurred:
Feb 11 20:27:45 project gunicorn[21670]: Traceback (most recent call last):
Feb 11 20:27:45 project gunicorn[21670]:   File "/home/siteuser/project/renv/lib/python3.6/site-packages/raven/utils/serializer/manager.py", line 76, in transform
Feb 11 20:27:45 project gunicorn[21670]:     return repr(value)
Feb 11 20:27:45 project gunicorn[21670]:   File "/usr/lib/python3.6/ipaddress.py", line 583, in __repr__
Feb 11 20:27:45 project gunicorn[21670]:     return '%s(%r)' % (self.__class__.__name__, str(self))
Feb 11 20:27:45 project gunicorn[21670]:   File "/usr/lib/python3.6/ipaddress.py", line 586, in __str__
Feb 11 20:27:45 project gunicorn[21670]:     return str(self._string_from_ip_int(self._ip))
Feb 11 20:27:45 project gunicorn[21670]: AttributeError: _ip