%% You should probably cite draft-ietf-mip6-vsm instead of this I-D.
@techreport{devarapalli-mip6-vsm-02,
    number =    {draft-devarapalli-mip6-vsm-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-devarapalli-mip6-vsm/02/},
    author =    {Vijay Devarapalli},
    title =     {{Mobile IPv6 Vendor Specific Option}},
    pagetotal = 7,
    year =      2006,
    month =     oct,
    day =       23,
    abstract =  {There is a need for vendor specific extensions to Mobility Header messages so that Mobile IPv6 vendors are able to extend the protocol for research or deployment purposes. This document defines a new vendor specific mobility option.},
}