Can you consider this "workaround" ?
Just install libpcap via apt-get and symlink the new libpcap.so.0.8 to libpcap.so.1.1.1 (your version with DAG support).
Note that even though the package version via apt-get says it is 0.8 it installs 1.0 and symlinks 0.8 because those two are binary compatible.
Once installed the files in libpcap are :
vivek@vivek-hardy:~/vistafolder$ dpkg --contents libpcap0.8_1.0.0-6_amd64.deb
drwxr-xr-x root/root 0 2010-01-05 06:45 ./
drwxr-xr-x root/root 0 2010-01-05 06:45 ./usr/
drwxr-xr-x root/root 0 2010-01-05 06:45 ./usr/lib/
-rw-r--r-- root/root 204128 2010-01-05 06:45 ./usr/lib/libpcap.so.1.0.0
drwxr-xr-x root/root 0 2010-01-05 06:45 ./usr/share/
drwxr-xr-x root/root 0 2010-01-05 06:45 ./usr/share/man/
drwxr-xr-x root/root 0 2010-01-05 06:45 ./usr/share/man/man7/
-rw-r--r-- root/root 9336 2010-01-05 06:45 ./usr/share/man/man7/pcap-filter.7.gz
drwxr-xr-x root/root 0 2010-01-05 06:45 ./usr/share/doc/
drwxr-xr-x root/root 0 2010-01-05 06:45 ./usr/share/doc/libpcap0.8/
-rw-r--r-- root/root 5556 2009-12-12 22:33 ./usr/share/doc/libpcap0.8/changelog.Debian.gz
-rw-r--r-- root/root 281 2009-08-23 23:41 ./usr/share/doc/libpcap0.8/README.Debian
-rw-r--r-- root/root 4482 2008-12-05 00:10 ./usr/share/doc/libpcap0.8/copyright
-rw-r--r-- root/root 8197 2008-10-28 05:57 ./usr/share/doc/libpcap0.8/changelog.gz
-rw-r--r-- root/root 1937 2008-10-23 23:54 ./usr/share/doc/libpcap0.8/README.gz
-rw-r--r-- root/root 2603 2008-10-11 08:12 ./usr/share/doc/libpcap0.8/CREDITS.gz
lrwxrwxrwx root/root 0 2010-01-05 06:45 ./usr/lib/libpcap.so.0.8 -> libpcap.so.1.0.0
We will just fix the so libraries to point to your new version with the DAG support.