@misc{rfc6517,
    series =    {Request for Comments},
    number =    6517,
    howpublished =  {RFC 6517},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6517},
    url =       {https://www.rfc-editor.org/info/rfc6517/},
    author =    {T. Morin and B. Niven-Jenkins and Y. Kamite and R. Zhang and N. Leymann and N. Bitar},
    title =     {{Mandatory Features in a Layer 3 Multicast BGP/MPLS VPN Solution}},
    pagetotal = 41,
    year =      2012,
    month =     feb,
    abstract =  {More that one set of mechanisms to support multicast in a layer 3 BGP/MPLS VPN has been defined. These are presented in the documents that define them as optional building blocks. To enable interoperability between implementations, this document defines a subset of features that is considered mandatory for a multicast BGP/MPLS VPN implementation. This will help implementers and deployers understand which L3VPN multicast requirements are best satisfied by each option. This document is not an Internet Standards Track specification; it is published for informational purposes.},
}