quick hack to fix this
wget --content-disp "https://downloads.sourceforge.net/project/xtables-addons/Xtables-addons/xtables-addons-2.13.tar.xz?r=https%3A%2F%2Fsourceforge.net%2Fprojects%2Fxtables-addons%2Ffiles%2FXtables-addons%2F&ts=1503442551&use_mirror=kent" "https://downloads.sourceforge.net/project/xtables-addons/Xtables-addons/xtables-addons-2.12.tar.xz?r=https%3A%2F%2Fsourceforge.net%2Fprojects%2Fxtables-addons%2Ffiles%2FXtables-addons%2F&ts=1503442622&use_mirror=netix"
tar xvf xtables-addons-2.12.tar.xz tar xvf xtables-addons-2.13.tar.xz cp -av /usr/src/xtables-addons-2.12 /usr/src/xtables-addons-2.12_dist rsync -av xtables-addons-2.13/ /usr/src/xtables-addons-2.12/ dkms autoinstall -k 4.12.0-1-amd64