@misc{rfc4938,
    series =    {Request for Comments},
    number =    4938,
    howpublished =  {RFC 4938},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4938},
    url =       {https://www.rfc-editor.org/info/rfc4938},
    author =    {Bo Berry and Howard H. Holgate},
    title =     {{PPP Over Ethernet (PPPoE) Extensions for Credit Flow and Link Metrics}},
    pagetotal = 17,
    year =      2007,
    month =     jun,
    abstract =  {This document extends the Point-to-Point over Ethernet (PPPoE) Protocol with a credit-based flow control mechanism and Link Quality Metric report. This optional extension should improve the performance of PPPoE over media with variable bandwidth and limited buffering, such as mobile radio links. This memo provides information for the Internet community.},
}