How to get default NIC Connection Name

Question

IMPORTANT EDIT: Back again on this subject. As you said there should be no default NIC, I\'m trying to understand if there is a way to detect all the NICs t

Answer 1

As others have mentioned, there is no "Default" NIC adapter in Windows. The NIC used is chosen based on the destination network (address) and the metric.

For example, if you have two NICs and two different networks:

  10.1.10.1 - Local Area Connection (metric 20)
  10.1.50.1 - Local Area Connection 2 (metric 10)

And you want to connect to 10.1.10.15, Windows will choose Local Area Connection and route that way. Conversely, if you want to connect to 10.1.50.30, Windows will choose Local Area Connection 2.

Now, if you try to connect to 74.125.67.106 (google.com), Windows will choose Local Area Connection 2 because it has a lower metric value.

EDIT: Here is a great article explaining routing - http://www.windowsnetworking.com/articles_tutorials/Making-Sense-Windows-Routing-Tables.html
EDIT2: Spelling.

Hope this helps.