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prefix
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... identifier after the name (e.g., "subnet ID"), it refers to the
contents of the named field. When it is used with the term "prefix"
(e.g., "subnet prefix"), it refers to all of the address ...
... contents of the named field. When it is used with the term "prefix"
(e.g., "subnet prefix"), it refers to all of the address from the
left up to and including this field.
...
... In IPv6, all zeros and all ones are legal values for any field,
unless specifically excluded. Specifically, prefixes may contain, or
end with, zero-valued fields.
...
... Currently, IPv6 continues the IPv4 model in that a subnet prefix is
associated with one link. Multiple subnet prefixes ...
... subnet prefix is
associated with one link. Multiple subnet prefixes may be assigned
to the same link.
...
... Text Representation of Address Prefixes ...
...
The text representation of IPv6 address prefixes is similar to the
way IPv4 address prefixes ...
... prefixes is similar to the
way IPv4 address prefixes are written in Classless Inter-Domain
Routing (CIDR) notation [CIDR ...
...
ipv6-address/prefix-length
where
...
... in Section 2.2.
prefix-length is a decimal value specifying how many of the
leftmost contiguous bits of the address ...
... bits of the address comprise
the prefix.
For example, the following are legal representations of the 60-bit ...
... For example, the following are legal representations of the 60-bit
prefix 20010DB80000CD3 (hexadecimal):
2001:0DB8:0000:CD30:0000:0000:0000:0000/60
...
... 2001:0DB8:0:CD30::/60
The following are NOT legal representations of the above prefix:
2001:0DB8:0:CD3/60 may drop leading zeros, but not trailing
...
...
Address type Binary prefix IPv6 notation Section
------------ ------------- ------------- -------
...
... addresses that do not start
with any of the above-listed prefixes as Global Unicast addresses.
...
... IPv6 unicast addresses are aggregatable with prefixes of arbitrary
bit-length, similar to IPv4 addresses ...
... A slightly sophisticated host (but still rather simple) may
additionally be aware of subnet prefix(es) for the link(s) it is
attached to, where different addresses ...
... bits |
+-------------------------------+---------------------------------+
| subnet prefix | interface ID |
+-------------------------------+---------------------------------+
...
... interfaces on a link. They are required to be unique within a subnet
prefix. It is recommended that the same interface identifier not be
assigned to different nodes ...
... +------------------------+-----------+----------------------------+
| global routing prefix | subnet ID | interface ID |
...
...
where the global routing prefix is a (typically hierarchically-
structured) value assigned to a site (a cluster of subnets ...
... Site-Local addresses were originally designed to be used for
addressing inside of a site without the need for a global prefix.
Site-local addresses are now deprecated as defined in [SLDEP ...
... +----------+-------------------------+----------------------------+
The special behavior of this prefix defined in [RFC3513] must no
longer be supported in new implementations (i.e., new implementations
...
... RFC3513] must no
longer be supported in new implementations (i.e., new implementations
must treat this prefix as Global Unicast).
...
... Existing implementations and deployments may continue to use this
prefix.
...
...
For any assigned anycast address, there is a longest prefix P of that
address that identifies the topological region in which all
...
... anycast address may
be aggregated into the routing entry for prefix P.
Note that in the worst case, the prefix ...
... prefix P.
Note that in the worst case, the prefix P of an anycast set may be
the null prefix ...
... prefix P of an anycast set may be
the null prefix, i.e., the members of the set may have no topological
locality. In that case, the anycast address must be maintained as a
...
... bits |
+------------------------------------------------+----------------+
| subnet prefix | 00000000000000 |
+------------------------------------------------+----------------+
...
... +------------------------------------------------+----------------+
The "subnet prefix" in an anycast address is the prefix that
...
... The "subnet prefix" in an anycast address is the prefix that
identifies a specific link. This anycast address ...
... unicast or anycast) and appending those bits to the prefix
FF02:0:0:0:0:1:FF00::/104 resulting in a multicast address in the
...
... IPv6
addresses that differ only in the high-order bits (e.g., due to
multiple high-order prefixes associated with different aggregations)
will map to the same Solicited-Node ...
... [5] 0000::/96 was previously defined as the "IPv4-Compatible IPv6
address" prefix. This definition has been deprecated by RFC
4291draft.
...
... tunnels. Interface identifiers that are unique within a subnet
prefix must be chosen.
When no built-in identifier ...
... interface
identifier. The only requirement is that it be unique within a
subnet prefix. There are many possible approaches to select a
subnet-prefix ...
... subnet prefix. There are many possible approaches to select a
subnet-prefix-unique interface identifier. These include the
following:
...
...
The subnet-prefix-unique interface identifier should be generated in
a manner such that it does not change after a reboot of a node ...
... working group is working in this area.
o Deprecated the Site-Local unicast prefix. Changes include the
following:
...