Why have DHCP and static IP address at the same time?

Question

At my current place of employment, on my Windows box, when I do an ipconfig /all from my command prompt I see that I have both a static IP address as well as a dynamic IP address. Why could that be? I am trying to diagram our network structure for a new software project that I'm on...knowing the answer to this question could help out a lot.

Answer 1

You have multiple NICs and are multi-homed?

Answer 2

These are from different interfaces. You could be on a VPN, have a wireless connection, or have 2 network cards.

Answer 3

One possible reason is if you need to have multiple host names/IPs for a computer with a single NIC. See this link for more information. Personally I can't see why this would be necessary, but it seems that Windows does provide a means to do it anyways.