I thought I'd be able to find this out on my own but I'm having a strange issue with a servers guest vNIC. After every other reboot, it gets an APIPA address as seen from ipconfig, although it's still set to static within the GUI. A simple disable and enable fixes the issue. I've tried removing the vNic from the guest VM and adding a new one as well as resetting the TCP/IP stack via Netsh and lastly, enabling hidden devices within devicemgr and wacking stale NICs I've created when troubleshooting. There is no signs of IP conflict.