I have a system that has several network adapters, only one of which is enabled. That adapter has ipv4 only enabled and it has a single IP address. It was previously part of a team. The team was broken while trying to fix another issue with the system. Now that it's back online with one nic and one IP address, some of the applications on the system are not working and when I use TCPview to see the connections the server is making I see that the applications in question are connecting on a local address of 169.254.x.x even though there are no unconfigured adapters. The applications that are working connect out via the hostname of the box.