building conntrack-tools

    slackpkg install libmnl
    slackpkg install libnfnetlink
    slackpkg install libnetfilter_conntrack

git clone git://git.netfilter.org/conntrack-tools
cd conntrack-tools/
./autogen.sh
./configure --sysconfdir=/etc --localstatedir=/var
make

pgrep -a conntrackd
removepkg conntrack-tools
make install

grep local /etc/ld.so.conf
ldconfig

resources

https://git.netfilter.org/conntrack-tools

https://github.com/vyos/conntrack-tools/tree/current