J2SE Version (please include all output from java -version flag):

java version "1.7.0-ea"
Java(TM) SE Runtime Environment (build 1.7.0-ea-b139)
Java HotSpot(TM) Client VM (build 21.0-b09, mixed mode, sharing)

Does this problem occur on J2SE 1.4.x, 1.5 or 6? Yes / No (pick one)
No


Operating System Configuration Information (be specific):
Windows Vista Business SP2

Hardware Configuration Information (be specific):
HP Pavillion dv9000
Windows Vista Business SP2 32 bit
3 GB RAM
Intel Core 2 Duo T9300



Bug Description:

Call to java.net.NetworkInterface.getNetworkInterfaces() takes around 100 times longer in Java 7

Had never tried this call with Java 7 before and do not know when this first
started occuring.

Have
 often wondered why this machine comes up with over 800 interfaces...
obviously most of them are not
 real. They come up with toString values
like "name:net751 (6TO4 Adapter) index: 767 addresses:".

Ever since first tried this call (years ago) this laptop has always
given a huge amount of interfaces;
 odd!!

Steps to Reproduce (be specific):

Run attached test program

Using Test6 run configuration
-----------------------------
Property 1: 1.6.0_24
Property 2: 1.6.0_24-b07
Property 3: Windows Vista
Property 4: x86
Property 5: 6.0
Property 5: Service Pack 2
Getting interfaces 13:24:57
Got interfaces 13:24:58
Found 811 interfaces 13:24:58
Done 13:24:58
Elased time: 0.778

Using Test7 run configuration
-----------------------------
Property 1: 1.7.0-ea
Property 2: 1.7.0-ea-b139
Property 3: Windows Vista
Property 4: x86
Property 5: 6.0
Property 5: Service Pack 2
Getting interfaces 13:25:18
Got interfaces 13:26:47
Found 811 interfaces 13:26:47
Done 13:26:47
Elased time: 89.285