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allows the host to anchor trust for the router's public key in the allows the host to anchor trust for the router's public key in the
trust anchor. Note that there MAY be multiple certificates issued by trust anchor. Note that there MAY be multiple certificates issued by
a single trust anchor. a single trust anchor.
6.5.1 Router Authorization Certificate Profile 6.5.1 Router Authorization Certificate Profile
Router Authorization Certificates be X.509v3 certificates, as defined Router Authorization Certificates be X.509v3 certificates, as defined
in RFC 3280 [10], and MUST contain at least one instance of the X.509 in RFC 3280 [10], and MUST contain at least one instance of the X.509
extension for IP addresses, as defined in [11]. The parent extension for IP addresses, as defined in [11]. The parent
certificates in the certificate chain MUST contain one or more X.509 certificates in the certificate chain MUST contain one or more X.509
IP address extensions, back up to the delegating authority (the IP address extensions, back up to a trusted party (such as the user's
Regional Address Registry or IANA) that delegated the original IP ISP) that configured the original IP address space block for the
address space block. The certificates for intermediate delegating router in question, or delegated the right to do so for someone. The
authorities MUST contain X.509 IP address extension(s) for certificates for intermediate delegating authorities MUST contain
subdelegations. The router's certificate is signed by the delegating X.509 IP address extension(s) for subdelegations. The router's
authority for the prefixes the router is authorized to to advertise. certificate is signed by the delegating authority for the prefixes
the router is authorized to to advertise.
The X.509 IP address extension MUST contain at least one The X.509 IP address extension MUST contain at least one
addressesOrRanges element that contains an addressPrefix element with addressesOrRanges element that contains an addressPrefix element with
an IPv6 address prefix for a prefix the router or the intermediate an IPv6 address prefix for a prefix the router or the intermediate
entity is authorized to advertise. If the entity is allowed to route entity is authorized to advertise. If the entity is allowed to route
any prefix, the used IPv6 address prefix is the null prefix, 0/0. any prefix, the used IPv6 address prefix is the null prefix, 0/0.
The addressFamily element of the containing IPAddrBlocks sequence The addressFamily element of the containing IPAddrBlocks sequence
element MUST contain the IPv6 Address Family Identifier (0002), as element MUST contain the IPv6 Address Family Identifier (0002), as
specified in [11] for IPv6 prefixes. Instead of an addressPrefix specified in [11] for IPv6 prefixes. Instead of an addressPrefix
element, the addressesOrRange element MAY contain an addressRange element, the addressesOrRange element MAY contain an addressRange

Diff produced by rfcdiff v0.34, from http://www.levkowetz.com/ietf/tools/rfcdiff/