Fix NS1 IPv6 monitor field

octodns/provider/ns1.py

@@ -1048,7 +1048,7 @@ class Ns1Provider(BaseProvider):
         }
 
         if _type == 'AAAA':
-            ret['config']['v6'] = True
+            ret['config']['ipv6'] = True
 
         if record.healthcheck_protocol != 'TCP':
             # IF it's HTTP we need to send the request string

tests/test_octodns_provider_ns1.py

@@ -926,7 +926,7 @@ class TestNs1ProviderDynamic(TestCase):
         value = '::ffff:3.4.5.6'
         record = self.aaaa_record()
         monitor = provider._monitor_gen(record, value)
-        self.assertTrue(monitor['config']['v6'])
+        self.assertTrue(monitor['config']['ipv6'])
 
     def test_monitor_gen_CNAME(self):
         provider = Ns1Provider('test', 'api-key')