RFC 3068 (rfc3068) - Page 2 of 9
An Anycast Prefix for 6to4 Relay Routers
Alternative Format: Original Text Document
RFC 3068 An Anycast Prefix for 6to4 Relay Routers June 2001
automatically routed to the nearest available router. It allows the
managers of the 6to4 relay routers to control the sources authorized
to use their resource. It makes it easy to set up a large number of
6to4 relay routers, thus enabling scalability.
2 Definitions
This memo uses the definitions introduced in [RFC 3056], in particular
the definition of a 6to4 router and a 6to4 Relay Router. It adds the
definition of the 6to4 Relay anycast prefix, 6to4 Relay anycast
address, 6to4 IPv6 relay anycast address, and Equivalent IPv4 unicast
address.
2.1 6to4 router (or 6to4 border router)
An IPv6 router supporting a 6to4 pseudo-interface. It is normally
the border router between an IPv6 site and a wide-area IPv4 network.
2.2 6to4 Relay Router
A 6to4 router configured to support transit routing between 6to4
addresses and native IPv6 addresses.
2.3 6to4 Relay anycast prefix
An IPv4 address prefix used to advertise an IPv4 route to an
available 6to4 Relay Router, as defined in this memo.
The value of this prefix is 192.88.99.0/24
2.4 6to4 Relay anycast address
An IPv4 address used to reach the nearest 6to4 Relay Router, as
defined in this memo.
The address corresponds to host number 1 in the 6to4 Relay anycast
prefix, 192.88.99.1.
2.5 6to4 IPv6 relay anycast address
The IPv6 address derived from the 6to4 Relay anycast address
according to the rules defined in 6to4, using a null prefix and a
null host identifier.
The value of the address is "2002:c058:6301::".
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