Does arptables support adding new extensions dinamically like iptables does?

Does arptables support adding new extensions dinamically like iptables does?

[Roberto Santalla Fdez.]

Hello,

I'm currently introducing myself into kernel development, and I decided 
to give building an xtables module a try. I'm trying to write a very 
simple arptable modules which checks whether an ARP requests comes from 
a given IP.

I've built the kernel module and the userspace library, but arptables 
seems to ignore it (module's name is arpway):

     [root@Archpv3]# ~> arptables -F
     [root@Archpv3]# ~> arptables -A INPUT -m arpway -j ACCEPT
     [root@Archpv3]# ~> arptables-save
     *filter
     :INPUT ACCEPT
     :OUTPUT ACCEPT
     :FORWARD ACCEPT
     -A INPUT -j ACCEPT

also, `arptables -m arpway -h` does not print my module's help text.

Just to check, if I change the module's scope to ipv4 (setting 
`xtables_match.family` to `NFPROTO_IPV4`), module's help is successfully 
printed with `iptables -m arpway -h`, and adding the rule and then 
printing it works.

Needless to say, module is successfully complied and `insmod`'ed, and 
userspace library is placed in `/usr/lib/iptables/libxt_arpway.so`.

Am I doing something wrong, or does arptables not support dynamic 
extensions/modules like iptables does?

Regards and thanks in advance, Roberto.