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        Title           : MPLS Label Stack Encapsulation in IP
        Author(s)       : P. Doolan, Y. Katsube, A. Malis, 
                          R. Wilder, T. Worster
        Filename        : draft-worster-mpls-in-ip-04.txt
        Pages           : 7
        Date            : 02-Mar-01
        
Several useful applications of MPLS tunnels based on LSPs with
second level labels between non adjacent LSRs have been
identified: IP-VPNs and VoIP over MPLS are just two examples. This
tunnelling technique can easily be extended to non-MPLS core
networks.
This Internet-Draft explains the motivation for encapsulating MPLS
messages in IP and provides the protocol specification of the
encapsulation.

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