May be a dupe of Bug #799136. Does the following command fix this issue for you?
sudo dpkg-divert --local --divert /sbin/dhclient3.renamed --rename /sbin/dhclient3
May be a dupe of Bug #799136. Does the following command fix this issue for you?
sudo dpkg-divert --local --divert /sbin/dhclient3 .renamed --rename /sbin/dhclient3