He probado con instalando las dependencias :

aptitude install libgmp-dev libreadline-dev
Luego los pasos :
git clone git://git.netfilter.org/nftables
cd nftables
./autogen.sh
./configure
make
make install
y ./configure me arroja esto :
root@Eva:/home/Eva/nftables# cd /home/Eva/nftables
root@Eva:/home/Eva/nftables# ./autogen.sh
root@Eva:/home/Eva/nftables# ./configure
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking how to create a pax tar archive... gnutar
checking whether make supports nested variables... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for style of include used by make... GNU
checking dependency style of gcc... gcc3
checking for a sed that does not truncate output... /bin/sed
checking for flex... no
checking for lex... no
checking for bison... no
checking for byacc... no
*** Error: No suitable bison/yacc found. ***
Please install the 'bison' package.
root@Eva:/home/Eva/nftables#
Esta linea no la entiendo donde colocarla y las otras dos que hacer con ellas :
ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes
Building nftables
Libraries
The following libraries are needed
libmnl: git://git.netfilter.org/libmnl
libnftnl: git://git.netfilter.org/libnftnl
Y queria saber si es obligatorio instalar la documentación o puedo dejarla sin instalar :
If you want to build the documentation:
aptitude install docbook2x docbook-utils
Y por último que debo hacer con lo que pone aquí :
Note that the usage of ac_cv_func_* may not be needed on your system.
kernel
If you do not have already a Linux git tree, run:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
If you already have a Linux git tree, you can just update to latest sources
cd linux
git pull --rebase
Now that you have the source, you can choose nftables option:
$ make oldconfig
Netfilter Xtables support (required for ip_tables) (NETFILTER_XTABLES) [M/y/?] m
Netfilter nf_tables support (NF_TABLES) [N/m] (NEW) m
Netfilter nf_tables payload module (NFT_PAYLOAD) [N/m] (NEW) m
Netfilter nf_tables IPv6 exthdr module (NFT_EXTHDR) [N/m] (NEW) m
Netfilter nf_tables meta module (NFT_META) [N/m] (NEW) m
Netfilter nf_tables conntrack module (NFT_CT) [N/m] (NEW) m
Netfilter nf_tables rbtree set module (NFT_RBTREE) [N/m] (NEW) m
Netfilter nf_tables hash set module (NFT_HASH) [N/m] (NEW) m
Netfilter nf_tables counter module (NFT_COUNTER) [N/m] (NEW) m
Netfilter nf_tables log module (NFT_LOG) [N/m] (NEW) m
Netfilter nf_tables limit module (NFT_LIMIT) [N/m] (NEW) m
Netfilter nf_tables nat module (NFT_NAT) [N/m] (NEW) m
Netfilter x_tables over nf_tables module (NFT_COMPAT) [N/m/?] (NEW) m
IPv4 nf_tables support (NF_TABLES_IPV4) [N/m] (NEW) m
nf_tables IPv4 reject support (NFT_REJECT_IPV4) [N/m] (NEW) m
IPv4 nf_tables route chain support (NFT_CHAIN_ROUTE_IPV4) [N/m] (NEW) m
IPv4 nf_tables nat chain support (NFT_CHAIN_NAT_IPV4) [N/m] (NEW) m
IPv6 nf_tables support (NF_TABLES_IPV6) [M/n] m
IPv6 nf_tables route chain support (NFT_CHAIN_ROUTE_IPV6) [M/n] m
IPv6 nf_tables nat chain support (NFT_CHAIN_NAT_IPV6) [M/n] m
Ethernet Bridge nf_tables support (NF_TABLES_BRIDGE) [N/m/y] (NEW) m
Now, you can build your kernel with the usual commands.
On a debian, you can do on a dual core machine:
make -j 2 deb-pkg
Or you can alternately use the old method:
CONCURRENCY_LEVEL=2 make-kpkg --revision 0.1 --rootcmd fakeroot --initrd --append-to-version nftables kernel_image kernel_headers
Perdonad por el tocho pero si me podeis ayudar a instalar nftables os lo agradeceria..
