The DECO M4 I purchased is in Mesh mode, so it has it's (default) 192.168.68.0 subnet of its own.  But it is connected to the router on the router's 192.168.1.0 subnet. 

The issue is that it is responding to DHCP calls on the Upstream 192.168.1.0 subnet and delivering 192.168.68.xx addresses to devices which are not behind it (upstream), so this is totally incorrect. 

How do I limit the DHCP responses to the Wifi side where the adresses are correct...

Thanks