@techreport{rosen-mpls-in-ip-or-gre-00,
    number =    {draft-rosen-mpls-in-ip-or-gre-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-rosen-mpls-in-ip-or-gre/00/},
    author =    {Tom Worster and Yakov Rekhter and Eric C. Rosen and Eric C. Rosen},
    title =     {{Encapsulating MPLS in IP or GRE}},
    pagetotal = 7,
    year =      2002,
    month =     aug,
    day =       13,
    abstract =  {In various applications of MPLS, label stacks with multiple entries are used. In some cases, it is possible to replace the top label of the stack with an IP-based encapsulation, thereby enabling the application to run over networks which do not have MPLS enabled in their core routers. This draft specifies two IP-based encapsulations, MPLS-in-IP, and MPLS-in-GRE. Each of these is applicable in some circumstances.},
}