Hey Benny!

----- ":read !ldd /sbin/nft | sed 's/\t/        /g'" starts
        linux-vdso.so.1 (0x00007fff48d84000)
        libmnl.so.0 => /usr/lib/libmnl.so.0 (0x00007fa551d59000)
        libnftnl.so.7 => /usr/lib/libnftnl.so.7 (0x00007fa551b35000)
        libreadline.so.7 => /lib/libreadline.so.7 (0x00007fa5518f2000)
        libgmp.so.10 => /usr/lib/libgmp.so.10 (0x00007fa551691000)
        libc.so.6 => /lib/libc.so.6 (0x00007fa551318000)
        libncursesw.so.6 => /lib/libncursesw.so.6 (0x00007fa5510c5000)
        /lib/ld-linux-x86-64.so.2 (0x00007fa551f5e000)
----- ":read !ldd /sbin/nft | sed 's/\t/        /g'" ends

I had to add libmnl-1.0.4 and libnftnl-1.0.8 to the basic system in order to
satisfy the above dependencies.  The rest I already have.

----- ":read !file /usr/lib/{libmnl.so.0.2.0,libnftnl.so.7.0.0}" starts
/usr/lib/libmnl.so.0.2.0:   ELF 64-bit LSB shared object, x86-64, version 1
(SYSV), dynamically linked, stripped
/usr/lib/libnftnl.so.7.0.0: ELF 64-bit LSB shared object, x86-64, version 1
(SYSV), dynamically linked, stripped
----- ":read !file /usr/lib/{libmnl.so.0.2.0,libnftnl.so.7.0.0}" ends

I haven't tested the ipv4-filter you posted as of this writing.  What are you
expecting that to do?

Life is good,
Maurice

... Don't cry for me I have vi.
--- GNU bash, version 4.4.12(1)-release (x86_64-silvermont-linux-gnu)