Here are some things you can’t yet do with IPv6:
- PXE Boot: There is no Preboot eXecutable Environment boot standard for IPv6 yet, and one will need to be developed before the ability makes its way into boot firmware.
- NAT: Network Address Translation was created to slow down IPv4 address exhaustion, so it is not needed for IPv6. However, many users seem to think that NAT enhances security (I largely disagree), and some have tried to develop a form of NAT during the IPv4-to-IPv6 transition phase so a group of IPv4-only hosts might communicate over a NAT device with IPv6-only hosts. But the transition NAT attempts have run into problems and aren’t considered general-purpose transition solutions. Ideally all hosts on the internet can directly address each other, so NAT should disappear with IPv4.
- WINS: Windows Internet Name Service maps NetBIOS names to IPv4 addresses, but Microsoft has moved to DNS for client-server name resolution and is developing PNRP for peer name resolution. Do not expect WINS to be implemented for IPv6 name resolution or to use IPv6 to transport queries.
Tags: ipv6