@misc{rfc3308,
    series =    {Request for Comments},
    number =    3308,
    howpublished =  {RFC 3308},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC3308},
    url =       {https://www.rfc-editor.org/info/rfc3308},
    author =    {Pat R. Calhoun and Wei Luo and Ken Peirce and Danny R. McPherson},
    title =     {{Layer Two Tunneling Protocol (L2TP) Differentiated Services Extension}},
    pagetotal = 10,
    year =      2002,
    month =     nov,
    abstract =  {The Layer Two Tunneling Protocol (L2TP) provides a standard method for tunneling PPP packets. The current specification provides no provisions for supporting Differentiated Services (diffserv) over the L2TP control connection or subsequent data sessions. As a result, no standard mechanism currently exists within L2TP to provide L2TP protocol negotiations for service discrimination.},
}