Application for an IPv6 Multicast Address

To apply for an IPv6 Multicast Address, we are looking for a technical description of the proposed use of the multicast address.

The IESG designated expert will review your request. The expert requires enough detail to understand why a globally unique multicast address is necessary. Once you have submitted the completed application form below, your application will be reviewed. Further information is provided in RFC 3307 and RFC 4291. Please note that there is less need to assign IPv6 multicast addresses than IPv4 addresses, as every IPv6 unicast range has a multicast address range assigned to it (see RFC 3306 for further information). For many other uses, a MADCAP server can be used to allocate IPv6 multicast addresses according to the principles set forth in RFC 4291.

If your request is approved, the fields marked "public" will be published in the IPv6 multicast address registry.

Please read the following questions carefully and provide complete answers.

Can you use a locally scoped address or a MADCAP (RFC 2730) generated address?

    • If you answered "Yes" and wish to proceed, explain why you need a globally unique address.

Do you need a permanently allocated address? (Please see RFC 3307 for further information)

Please explain why you need a permanently allocated address.

Are you able to use Unicast-Prefix-Based IPv6 Multicast Addresses in FF3x::/16 or Embedded-RP Multicast Addresses in FF7x::/16?

Please explain why it is not possible to use Unicast Prefix-Based Multicast.

Are you able to use Source-specific Multicast (SSM)?

Please explain why it is not possible to use SSM.

In which block are you requesting an assignment?

If Other, explain your requirement.

Are you using a link local protocol?

If yes, please explain your proposed use of the multicast address

Are you using a global protocol?

If yes, please explain your proposed use of the multicast address

What is the protocol on the network?

If the proposed multicast use is for a new application or protocol for wide distribution, please describe the following:

  • What message formats are used?
  • What message types are used?
  • What message op codes are used?
  • What message sequences are used?

What functions are performed by this protocol?

How is multicast used by this application?

Have you or your organisation requested globally unique IPv4 or IPv6 multicast addresses before?

If yes, and you received a multicast assignment, please list all addresses assigned:

If yes, and you did not receive a multicast assignment, please let us know which ticket number your request was evaluated in, if available. The ticket number is listed in the subject line of the emails you received from us.

Will you need the proposed assignment for a defined period or for the foreseeable future? If you will need the assignment for a defined period please indicate the length of time you will need the assignment for here:

If your proposed use of the multicast address is described in an Internet-Draft or other specification, provide a reference here:

What name do you want associated with this multicast address? The name should be representatives of the proposed use of the address.

Provide any additional information not described above that would assist the expert in reviewing your application.

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