@techreport{petrescu-mip4-tuntype-change-00,
    number =    {draft-petrescu-mip4-tuntype-change-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-petrescu-mip4-tuntype-change/00/},
    author =    {Alexandre Petrescu and Christophe Janneteau and Nicolas Demailly},
    title =     {{Tunnel Type Change for Mobile IPv4 (TTC)}},
    pagetotal = 17,
    year =      2011,
    month =     mar,
    day =       7,
    abstract =  {The protocol Mobile IPv4 may use a number of encapsulation methods between an MN and its HA. The UDP method is used to perform NAT Traversal (if a NAT sits between MN and HA) whereas IP-in-IP method may be used if there is no NAT (CoA is a publicly routable address). Although these methods are individually specified, a mechanism for changing between one to another is not, which may lead to incoherent implementations. This draft briefly presents the scenario of a MN performing a handover between private space (NAT) and public space (non-NAT), the implementation problem (type of tunnel can not be changed dynamically), and some potential solutions as textual modifications, better implementations, or protocol extensions.},
}