EDIT: I installed pixiwps and reaver from deb file. When I run reaver it said it cannot find libpcap.so.1 though I had all dependecies installed. I checked /usr/lib/ and I had libpcap.so, libpcap.so.0.8. and libpcap.so.1.3.0. I found a solution for this issue on the web: "ln -s /usr/lib/libpcap.so.0.8 /usr/lib/libpcap.so.1". Reaver now runs fine although I cannot test it properly. (WARNING! DO THINGS AT YOUR OWN RISK!)