libnet: changed project and download URL to the archive provided by the openwall project

Note:

The original site of the author (packetfactory.net) disapeared quite some
time ago but people from the openwall provide an archive hosting most
of the stuff formerly available on packetfacktory.net.

If you might wonder the unversioned libnet.tar.gz has exactly the same cksum
like the original libnet-1.1.2.1.tar.gz. I checked that!

network/libnet/libnet.desc

@@ -2,7 +2,7 @@
 [COPY] This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 [COPY]
 [COPY] Filename: package/.../libnet/libnet.desc
-[COPY] Copyright (C) 2006 - 2008 The OpenSDE Project
+[COPY] Copyright (C) 2006 - 2012 The OpenSDE Project
 [COPY] Copyright (C) 2004 - 2006 The T2 SDE Project
 [COPY] Copyright (C) 1998 - 2004 Clifford Wolf
 [COPY]
@@ -23,7 +23,7 @@
 [T] at the IP layer and link layer, as well as a host of supplementary
 [T] and complementary functionality.
 
-[U] http://www.packetfactory.net/projects/libnet/
+[U] http://packetfactory.openwall.net/projects/libnet/
 
 [A] Mike D. Schiffman <mike@infonexus.com>
 [M] The OpenSDE Community <list@opensde.org>
@@ -36,4 +36,4 @@
 [V] 1.1.2.1
 [P] X -----5---9 115.500
 
-[D] 1190536047 libnet-1.1.2.1.tar.gz http://www.packetfactory.net/projects/libnet/dist/
+[D] 1190536047 libnet-1.1.2.1.tar.gz !http://www.packetfactory.net/projects/libnet/dist/libnet.tar.gz