What is a 6to4 address?

Any IPv6 address that begins with the 2002::/16 prefix (in other words, any address with the first two octets of 2002 hexadecimal) is known as a 6to4 address, as opposed to a native IPv6 address which does not systematically use transition technologies.

What IPv6 address should I use?

The 126-bit prefix is typically used for point-to-point links similar to the IPv4 address-conservative /30 allocation for point-to-point links. However, the address space in IPv6 is significantly larger than the IPv4 address space. The general recommendation is to use /64 on point-to-point links.

How do you write an IPv6 address?

The IPv6 address size is 128 bits. The preferred IPv6 address representation is: x:x:x:x:x:x:x:x , where each x is the hexadecimal values of the eight 16-bit pieces of the address. IPv6 addresses range from 0000:0000:0000:0000:0000:0000:0000:0000 to ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff .

Why does my IPv6 address keep changing?

Many websites will automatically log you out if your IP address changes for security reasons. This is normal behavior and is to be expected when using a connection with a dynamic IP assigned. The actual IP is listed by Google as a IP from a nearby neighborhood.

What type of address is 1 128?

The leading bits in the address specify the type of IPv6 address. The variable-length field containing these leading bits is called the format prefix (FP)….IPv6 Addressing.

Allocation Prefix (binary) Fraction of Address Space
Unassigned 1111 110 1/128
Unassigned 1111 1110 0 1/512
Link Local Use Addresses 1111 1110 10 1/1024

Why does my phone have 3 IPv6 addresses?

You will get a different IPv6 address for each unique interface/MAC address. So your wifi and cellular will have two different ones. Once you VPN to a network, you will get a third IPv6.

What is the default IPv4 address for a 6to4 router?

To allow a 6to4 host to communicate with the native IPv6 Internet, it must have its IPv6 default gateway set to a 6to4 address which contains the IPv4 address of a 6to4 relay router. To avoid the need for users to set this up manually, the anycast address used to be allocated.

What does 6to4 stand for in Internet Protocol?

6to4 is an Internet transition mechanism for migrating from Internet Protocol version 4 (IPv4) to version 6 (IPv6), a system that allows IPv6 packets to be transmitted over an IPv4 network (generally the IPv4 Internet) without the need to configure explicit tunnels.

Can you request reverse DNS for a 6to4 address?

When a site using 6to4 has a fixed global IPv4 address, its 6to4 IPv6 prefix is also fixed. It is then possible to request reverse DNS delegation for an individual 6to4 48-bits prefix inside the DNS zone from the Number Resource Organization at 6to4.nro.net. The process is entirely automatic.