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Forum Discussion
IPv6
I don't expect much here. Just please include the precompiled ipv6.o in the modules directory for the next RAIDiator release. :D
Some notes on IPv6:
- Every Windows version since Vista not only supports IPv6, but it is switched on by default, and it is the preferred protocol over IPv4 as with any IPv4 + IPv6 (dual stack) capable device. So if DNS returns an IPv4 address and an IPv6 address for a web site, any IPv6 enabled device will setup an IPv6 connection, never an IPv4 connection.
- Just type ipconfig/all in the command prompt of Vista and Windows-7, and you will see some special IPv6 addresses.
- Windows-XP can support IPv6, but you will have to install a special pack.
- Keep in mind that the IP stack of Windows-XP in general is quite poor compared to the IP stacks of Vista and later.
- IPv4 and IPv6 are not compatible. That means you will have to run a dual stack as long as you need to connect to IPv4 hosts (that will be for many years I'm afraid).
- The address space of IPv6 is indeed enormous. IPv4 is a 32 bit network, normally you would use what was called a Class-C network in your home LAN. That is a /24 network, and it leaves you with 32-24=8 bits for hosts on your LAN. These 8 bits will support 254 host addresses. IPv6 is a 128 bit network. A standard subnet with IPv6 is a /64 network. That leaves you with 128-64=64 bits for host addresses on this subnet. Compare that with the 32 bits for the entire IPv4 Internet. Normally your provider will give you a /48 network, leaving you with 128-48=80 bits of address space. Since a normal subnet is a /64 network, the remaining 80-64=16 bits can be used to set up 65536 subnets. Should be sufficient I think.
- If you're buying a new router, make sure it has IPv6! Also check if your present router supports it, or if there is a new firmware release that supports it, or ask the manufacturer if they are planning a firmware release with IPv6.
- Normally an IPv6 SOHO router will by default block all incoming IPv6 traffic, so your IPv6 equipment is quite safe.
- Android phones, and I'm sure iPhones as well, support IPv6 by default.
- If you router supports it, you can also set up an IPv6 tunnel over IPv4 (assuming your provider doesn't support IPv6 yet). It will also give you real IPv6 addresses on your home LAN.
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