said by RARPSL:The Descriptions states "IPv4 uses 32-bit addresses and can support around 4 billion IP addresses, while IPv6 supports 2 to the 128th power of IP addresses (read: lots)."
While this is true, it is also misleading. The low 64 bits are used to designate the MAC Address of the NIC's Ethernet interface. Also, what is handed to the user is an IPv6/48 address (the equivalent of the current IPv4/32 given to the user). Thus the user has 16 bits of addressing on their LAN.
I've been trying to investigate what might get delivered to the me (the end user). Recommendations seem to indicate that I'll end up with a prefix length of /64 but one of the questions that Comcast asked was how many public IPv4 addresses do you current use. This would indicate to me that they might use a larger prefix. Yes this goes against what seems to be the ARIN addressing recommendations but that very document discusses using other prefixes (talk about confusing). This will be an issue of route table size and handling.
