root@bx:~# apt-cache policy libpcap0.8
libpcap0.8:
  Installed: 1.7.4-2
  Candidate: 1.7.4-2
  Version table:
 *** 1.7.4-2 500
        500 http://ftp.cuhk.edu.hk/pub/Linux/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status



root@bx:~# apt-get purge --auto-remove libpcap0.8
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 aircrack-ng : Depends: libpcap0.8 (>= 0.9.8) but it is not going to be installed
 libpcap0.8-dev : Depends: libpcap0.8 (= 1.7.4-2) but it is not going to be installed
 ppp : Depends: libpcap0.8 (>= 0.9.8) but it is not going to be installed
 reaver : Depends: libpcap0.8 (>= 0.9.8) but it is not going to be installed
 tcpdump : Depends: libpcap0.8 (>= 1.5.1) but it is not going to be installed
 wireshark-common : Depends: libpcap0.8 (>= 1.5.1) but it is not going to be installed
 wireshark-qt : Depends: libpcap0.8 (>= 1.5.1) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).


root@bx:~# apt-get remove --dry-run libpcap0.8
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 aircrack-ng : Depends: libpcap0.8 (>= 0.9.8) but it is not going to be installed
 libpcap0.8-dev : Depends: libpcap0.8 (= 1.7.4-2) but it is not going to be installed
 ppp : Depends: libpcap0.8 (>= 0.9.8) but it is not going to be installed
 reaver : Depends: libpcap0.8 (>= 0.9.8) but it is not going to be installed
 tcpdump : Depends: libpcap0.8 (>= 1.5.1) but it is not going to be installed
 wireshark-common : Depends: libpcap0.8 (>= 1.5.1) but it is not going to be installed
 wireshark-qt : Depends: libpcap0.8 (>= 1.5.1) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).


I INSTALLED REAVER MDK3 FROM GITHUB, RUNNING 16.04