I have a server 2012 running Apache and depending on the client IP address on the same LAN depends on whether the page will load from the client. The clients connect both over WiFi and hardwired Ethernet on the same subnet. Then the VM is set to a particular VLAN that is different then the other VMs on that host. Also, RDP is affected in the same way. When the webpage won't load, RDP won't connect. With the 'working' IPs both work.