hello,
I don't know what is IPv4, IPv6 and IP-NAT.
where can I find document about this, or somebody to explain to me?
I need some help about connecting a machine(NetBSD i386 1.4.2) with 
no hostname, no IP, no domainname to my ISP with
just with a phone number, a login and a password( maybe something else
 but not an IP).
thank's.
R.