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IPv6
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... IP
Version 6 protocol. It includes a detailed description of the
currently defined address formats for IPv6 [IPV6].
...
... IPv6 ADDRESSING ...
... There are no broadcast addresses in IPv6, their function being
superseded by multicast addresses.
...
...
In IPv6, all zeros and all ones are legal values for any field,
unless specifically excluded. Specifically, prefixes may contain
...
... addresses). A
single interface may also be assigned multiple IPv6 addresses of any
type (unicast, anycast ...
... interfaces that
are not used as the origin or destination of any IPv6 packets to or
from non-neighbors. This is sometimes convenient for point-to-point ...
...
There are three conventional forms for representing IPv6 addresses as
text strings:
...
...
2. Due to some methods of allocating certain styles of IPv6
addresses, it will be common for addresses to contain long strings
of zero bits ...
...
3. An alternative form that is sometimes more convenient when dealing
with a mixed environment of IPv4 and IPv6 nodes is
x:x:x:x:x:x:d.d.d.d, where the 'x's are the hexadecimal values of
...
... IPv4 addresses prefixes are written in CIDR notation. An IPv6
address prefix is represented by the notation:
...
...
ipv6-address/prefix-length
...
...
ipv6-address is an IPv6 address in any of the notations listed
in section 2.2.
...
...
ipv6-address is an IPv6 address in any of the notations listed
in section 2.2.
...
... loopback
address (see section 2.5.3), and the IPv6 Addresses with
Embedded IPv4 Addresses (see section 2.5.4), are assigned out
...
...
There are several forms of unicast address assignment in IPv6,
including the global aggregatable global unicast address ...
...
IPv6 nodes may have considerable or little knowledge of the internal
structure of the IPv6 address, depending on the role ...
... IPv6 nodes may have considerable or little knowledge of the internal
structure of the IPv6 address, depending on the role the node plays
...
... unicast address. Though a very simple router may
have no knowledge of the internal structure of IPv6 unicast
addresses, routers will more generally have knowledge of one or more
...
... interfaces of a single node does not affect the interface
identifier's global uniqueness or each IPv6 addresses global
uniqueness created using that interface identifier ...
... The details of forming interface identifiers are defined in the
appropriate "IPv6 over <link>" specification such as "IPv6 over
...
... address. One example of its use is in the Source Address field of
any IPv6 packets sent by an initializing host before it has learned
its own address ...
... address must not be used as the destination address
of IPv6 packets or in IPv6 Routing Headers.
...
... address.
It may be used by a node to send an IPv6 packet to itself. It may
never be assigned to any physical interface. It may be thought of as
...
... loopback address must not be used as the source address in IPv6
packets that are sent outside of a single node. An IPv6 packet with
...
... source address in IPv6
packets that are sent outside of a single node. An IPv6 packet with
a destination address of loopback ...
... loopback must never be sent outside of a
single node and must never be forwarded by an IPv6 router.
...
... IPv6 Addresses with Embedded IPv4 Addresses ...
... IPv6 packets over IPv4 routing
infrastructure. IPv6 nodes that utilize this technique are assigned
special IPv6 unicast addresses ...
... infrastructure. IPv6 nodes that utilize this technique are assigned
special IPv6 unicast addresses that carry an IPv4 address in the low-
...
...
A second type of IPv6 address which holds an embedded IPv4 address is
also defined. This address ...
... IPv4-only nodes (those that *do not* support IPv6) as IPv6 addresses.
This type of address is termed an "IPv4-mapped ...
...
This mapping of NSAP address into IPv6 addresses is defined in
[NSAP]. This document recommends that network ...
... NSAP addressing plan, and who wish to
deploy or transition to IPv6, should redesign a native IPv6
addressing plan to meet their needs. However, it also defines a set
of mechanisms for the support of OSI ...
... addressing plan, and who wish to
deploy or transition to IPv6, should redesign a native IPv6
addressing plan to meet their needs. However, it also defines a set
of mechanisms for the support of OSI NSAP ...
... OSI NSAP addressing in an IPv6
network. These mechanisms are the ones that must be used if such
support is required. This document also defines a mapping of IPv6
addresses within the OSI ...
... addressing in an IPv6
network. These mechanisms are the ones that must be used if such
support is required. This document also defines a mapping of IPv6
addresses within the OSI address format, should this be required.
...
... Local-Use IPv6 Unicast Addresses ...
... Such addresses could be used as intermediate addresses in an IPv6
Routing header, to cause a packet to be delivered via a particular
aggregation ...
... ANYCST]. Until more experience
has been gained and solutions agreed upon for those problems, the
following restrictions are imposed on IPv6 anycast addresses:
...
... An anycast address must not be assigned to an IPv6 host, that
is, it may be assigned to an IPv6 router ...
... anycast address must not be assigned to an IPv6 host, that
is, it may be assigned to an IPv6 router only.
...
... Multicast addresses must not be used as source addresses in IPv6
packets or appear in any routing header.
...
... The above multicast addresses identify the group of all IPv6 nodes,
within scope 1 (node-local) or 2 (link-local ...
... The above multicast addresses identify the group of all IPv6 routers,
within scope 1 (node-local), 2 (link-local ...
... node multicast address corresponding to
the IPv6 address 4037::01:800:200E:8C6C is FF02::1:FF0E:8C6C. IPv6
addresses that differ only in the high-order bits, e.g. due to
...
... multicast address corresponding to
the IPv6 address 4037::01:800:200E:8C6C is FF02::1:FF0E:8C6C. IPv6
addresses that differ only in the high-order bits, e.g. due to
multiple high-order prefixes ...
... Assignment of New IPv6 Multicast Addresses ...
... IEEE 802 MAC addresses takes the low order 32 bits of the IPv6
multicast address and uses it to create a MAC address ...
... 32 bits will generate
unique MAC addresses. Due to this new IPv6 multicast addresses
should be assigned so that the group identifier ...
...
While this limits the number of permanent IPv6 multicast groups to
2^32 this is unlikely to be a limitation in the future. If it
...
...
IPv6 addressing documents do not have any direct impact on Internet
infrastructure security. Authentication of IPv6 packets ...
... IPv6 addressing documents do not have any direct impact on Internet
infrastructure security. Authentication of IPv6 packets is defined
in [AUTH].
...
... bits of the manufacturer-
selected extension identifier. The IPv6 interface identifier would
be of the form:
...
... dependent. The details on forming interface identifiers are defined
in the appropriate "IPv6 over <link>" specification. It is strongly
recommended that a collision detection algorithm ...
...
This appendix defines the text representation of IPv6 addresses and
prefixes in Augmented BNF ...
... Added notation for defining IPv6 prefixes. ...
... Deering, S., and R. Hinden, Editors, "Internet Protocol, Version 6 (IPv6) Specification", RFC 1883(-> 2460draft), December 1995. ...
... Bound, J., Carpenter, B., Harrington, D., Houldsworth, J., and A. Lloyd, "OSI NSAPs and IPv6", RFC 1888(-> 4048), August 1996. ...
... Gilligan, R., and E. Nordmark, "Transition Mechanisms for IPv6 Hosts and Routers", RFC 1993, April 1996. ...