* Attempt to fix #66

wg_dashboard_backend/migrations/versions/011_alter_server_ipv6_subnet_nullable.py

@@ -0,0 +1,20 @@
+from sqlalchemy import *
+from migrate import *
+
+
+def upgrade(migrate_engine):
+    try:
+        meta = MetaData(bind=migrate_engine)
+        server = Table('server', meta, autoload=True)
+        server.c.v6_subnet.alter(nullable=True)
+    except:
+        pass
+
+
+def downgrade(migrate_engine):
+    try:
+        meta = MetaData(bind=migrate_engine)
+        server = Table('server', meta, autoload=True)
+        server.c.v6_subnet.alter(nullable=False)
+    except:
+        pass