What is FE80 in an IPv6 address?
Typically, link-local IPv6 addresses have “FE80” as the hexadecimal representation of the first 10 bits of the 128-bit IPv6 address, then the least-significant 64-bits of the address are the Interface Identifier (IID).
What is the default prefix length for an IPv6 address?
64 bits
For an IPv4 address, the prefix length must be less than or equal to 32 bits. For an IPv6 address, the prefix length must be less than or equal to 128 bits. The default value of the prefix length for an IPv6 address is 64 bits.
What is the recommended prefix length for most IPv6 subnets?
123.255. IPv4 network addresses can have a prefix length between 1 and 32. IPv6 network addresses can have a prefix length between 1 and 128.
What is the length of an IPv6 address?
128-bit
IPv6 uses 128-bit (2128) addresses, allowing 3.4 x 1038 unique IP addresses. This is equal to 340 trillion trillion trillion IP addresses. IPv6 is written in hexadecimal notation, separated into 8 groups of 16 bits by the colons, thus (8 x 16 = 128) bits in total.
What does FE80 ::/ 64 mean?
IPv6 link-local addresses are defined by RFC 4291 (IPv6 Addressing Architecture) and are covered by the prefix fe80::/10. In practice, only fe80::/64 is used. So IPv4 link-local addresses show up when there are no other IPv4 addresses. In contrast, IPv6 link-local addresses are used next to other IPv6 addresses.
Why are there 2 link-local IPv6 addresses?
Because new addresses are generated regularly the addresses are marked as temporary . A device can have multiple privacy extension addresses if the system is still using an old address when a new address is being generated. The system will keep the old address for as long as necessary.
Do all IPv6 addresses start with 2001?
Some examples of IPv6 formats include: Global unicast. These addresses are routable on the internet and start with “2001:” as the prefix group. Global unicast addresses are the equivalent of IPv4 public addresses.
How many IPv6 addresses should I have?
IPv6 addresses are assigned to organizations in much larger blocks as compared to IPv4 address assignments—the recommended allocation is a /48 block which contains 280 addresses, being 248 or about 2.8×1014 times larger than the entire IPv4 address space of 232 addresses and about 7.2×1016 times larger than the /8 …
Should I use IPv6 on my Home Network?
Yes, there is a benefit to using IPv6 at home. The main one is education, i.e. you will gain experience at administering an IPv6 network that you can put on your resume.
Which is better IPv4 or IPv6?
IPv6 is more advanced and has better features compared to IPv4. It has the capability to provide an infinite number of addresses. It is replacing IPv4 to accommodate the growing number of networks worldwide and help solve the IP address exhaustion problem.
Is IPv6 the same as IPv4?
There are currently two version of Internet Protocol (IP): IPv4 and a new version called IPv6. IPv6 is an evolutionary upgrade to the Internet Protocol. IPv6 will coexist with the older IPv4 for some time.
Which IPv6 address is valid?
The following are examples of valid IPv6 (dual) addresses: 2001:db8:3333:4444:5555:6666:1.2.3.4::11.22.33.44 (implies all six IPv6 segments are zero) 2001:db8::123.123.123.123 (implies that the last four IPv6 segments are zero)::1234:5678:91.123.4.56 (implies that the first four IPv6 segments are zero)