Add nftables-0.9.2

[thomas]

​http://www.netfilter.org/projects/nftables/index.html ​http://www.netfilter.org/projects/nftables/files/nftables-0.8.tar.bz2

I read somewhere that this is now fully supported by the >= 3.13 kernel. Maybe it becomes interesting as LFS now has 3.13 too.

Another nftables-howto: ​https://home.regit.org/netfilter-en/nftables-quick-howto/

[bdubbs@…]

This package requires libmnl-1.0.3.tar.bz2 and libnftnl-1.0.0. Both of those build and install as simple CMMI. I built nftables-0.100 also as a CMMI, but executing a simple 'nft --help' gives a segfault. My current kernel is 3.11.4, but that shouldn't create a segfault for help.

I did try to pass ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes to configure, but that didn't help.

Using strace, I get:

socket(PF_NETLINK, SOCK_RAW, 12)        = -1 EPROTONOSUPPORT (Protocol not supported)
write(2, "Memory allocation failure\n", 26Memory allocation failure
) = 26
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0} ---
+++ killed by SIGSEGV +++
Segmentation fault

Searching the source, it looks like I'll need to boot to the 3.13 kernel to test this out. I may not get to that for a few days.

[bdubbs@…]

Another issue: make want to create a pdf for documentation and the build procedure errors out. I can disable it with a sed, but that will also take some time to figure out.

[Fernando de Oliveira]

I will build a 3.13.1 kernel tomorrow and will try.

[Fernando de Oliveira]

I see you have just built the 3.13.1 kernel, so, I will do it perhaps later than tomorrow.

[bdubbs@…]

Rebooted to 3.13.1 and at least ./nft --help worked. I wasn't sure what kernel options to use so I created most as modules. The only one loaded right now is nfnetlink. To use this package properly, I think we need a whole new section on fire-walling with nft. I don't know that this will make it into 7.5 or not.

[Fernando de Oliveira]

Yes.

Below, a link that you probably already know. May be useful to anybody arriving here and trying to understand this and perhaps, wishing to discuss in dev.

​https://home.regit.org/netfilter-en/nftables-quick-howto/

[bdubbs@…]

Moving to future. The package is still beta at best. There is no documentation other than an xml file that was committed in 2009 (and written something before that -- apparently 2008). Generating the man page via the Makefile requires additional tools not in BLFS.

The man page can be generated with some FIXME entries with: xsltproc -nonet ​http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl nftables.xml

The contents of the man page are wrong. The program is referred to as nftables when in fact it is nft. I don't know about the accuracy of the rest after 6 years of development.

Let's let this package mature a bit

[Samuel]

Changed to nftables 0.6. Should this be put on hold?

[Douglas R. Reno]

I'm not sure putting it on hold would be the best idea. The "hold" milestone is basically packages that we are waiting for / waiting to update (As far as I understand it). The future milestone consists of tasks that we might do in the future, but are very low priority.

[Samuel]

Ok. I'll just leave it. I didn't really know what's the hold milestone was for, so I was just putting the question out there.

[bdubbs@…]

Milestone renamed

[DJ Lucas]

Libmnl-1.0.4:

./configure --prefix=/usr &&
make &&
make install &&
mv -v /usr/lib/libmnl.so.* /lib &&
ln -sfv ../../lib/$(readlink /usr/lib/libmnl.so) /usr/lib/libmnl.so

Libnftnl:

./configure --prefix=/usr &&
make &&
make install &&
mv -v /usr/lib/libnftnl.so.* /lib &&
ln -sfv ../../lib/$(readlink /usr/lib/libnftnl.so) /usr/lib/libnftnl.so

Nftables:

Optional deps:

janson/--with-json

iptables/--with-xtables (reciprocal)

docbook2man/--enable-man-doc

./configure --prefix=/usr --sbindir=/sbin --sysconfdir=/etc --disable-man-doc &&
make &&
make install &&
mv -v /usr/lib/libnftables.so.* /lib &&
ln -sfv ../../lib/$(readlink /usr/lib/libnftables.so) /usr/lib/libnftables.so

[DJ Lucas]

This now required for firewalld on systemd.

[DJ Lucas]

Fixed in r22301.

[Douglas R. Reno]

Hi DJ, do I need to add a unit for nftables to the units tarball?