diff --git a/setup/server.py b/setup/server.py
index db473770..89a0815e 100644
--- a/setup/server.py
+++ b/setup/server.py
@@ -96,22 +96,22 @@ def build_app(path):
         data['uid'] = str(uuid.uuid4())
         valid = True
         try:
-            ipaddress.ip_address(data['bind4'])
+            ipaddress.IPv4Address(data['bind4'])
         except:
             flask.flash('Configured IPv4 address is invalid', 'error')
             valid = False
         try:
-            ipaddress.ip_address(data['bind6'])
+            ipaddress.IPv6Address(data['bind6'])
         except:
             flask.flash('Configured IPv6 address is invalid', 'error')
             valid = False
         try:
-            ipaddress.ip_network(data['subnet'])
+            ipaddress.IPv4Network(data['subnet'])
         except:
             flask.flash('Configured subnet(IPv4) is invalid', 'error')
             valid = False
         try:
-            ipaddress.ip_network(data['subnet6'])
+            ipaddress.IPv6Network(data['subnet6'])
         except:
             flask.flash('Configured subnet(IPv6) is invalid', 'error')
             valid = False