arpon version 2.0-2ubuntu1 failed to build in oneiric

arpon version 2.0-2ubuntu1 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2688673

Details about the rebuild:
http://people.ubuntuwire.org/~wgrant/rebuild-ftbfs-test/test-rebuild-20110816-oneiric.html

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2688673/+files/buildlog_ubuntu-oneiric-amd64.arpon_2.0-2ubuntu1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 382 lines into the build log:

  with mis-matching arguments.
This warning is for project developers. Use -Wno-dev to suppress it.

-- Found Libdnet.
-- Found Libnet.
CMake Error at cmake_modules/FindPCAP.cmake:33 (message):
   Libpcap not found! Please visit http://www.tcpdump.org/ or see in the arpon 'INSTALL' file.
Call Stack (most recent call first):
  CMakeLists.txt:49 (find_package)

-- Configuring incomplete, errors occurred!
make: *** [debian/build/CMakeCache.txt] Error 1
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110819-1944
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/arpon-2.0