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        Title           : Problem Statement and Requirements for Mobile IPv4 
                          Traversal Across VPN or 'NAT and VPN' Gateways
        Author(s)       : F. Adrangi, P. Iyer
        Filename        : draft-adrangi-mobileip-nat-vpn-problem-stat-req-00.txt
        Pages           : 12
        Date            : 22-Feb-02
        
This draft describes the problem statement and specifies the 
solution requirements for MIPv4 traversal across VPN or 'NAT 
and VPN' gateways.  The 'NAT and VPN' case refers to a network 
topology in which the MIPv4 traffic has to traverse one or more 
NAT gateway(s) followed by a VPN gateway in the path to its 
final destination.  Requirements and problems associated with 
MIPv4 traversal through NAT gateways NOT involving VPNs is 
outside the scope of this draft.

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