said by Kearnstd:so a question then. If I went IPV6 I can use a router then? and instead of the router assigning IPs instead Comcast does the DHCP even for LAN clients?
More I am curious how does this effect SAMBA shares and does it still keep the public internet from seeing them.
You will still use a 'router' on your end. Instead of handling NAT it will act as a router should. It will route the connections from your LAN devices to the /128 on the WAN side. You will still need (And this will be handled by most routers) DHCP & DHCPv6/Radvd for both IPv4 and IPv6 addressing. You will also still use a DNS forwarder (again handled by the router).