File list of package libnetfilter-cttimeout-dev in buster of architecture amd64
/usr/include/libnetfilter_cttimeout/libnetfilter_cttimeout.h /usr/lib/x86_64-linux-gnu/libnetfilter_cttimeout.so /usr/lib/x86_64-linux-gnu/pkgconfig/libnetfilter_cttimeout.pc /usr/share/doc/libnetfilter-cttimeout-dev /usr/share/doc/libnetfilter-cttimeout1/README