%% You should probably cite rfc4994 instead of this I-D.
@techreport{ietf-dhc-dhcpv6-ero-01,
    number =    {draft-ietf-dhc-dhcpv6-ero-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-dhc-dhcpv6-ero/01/},
    author =    {Shengyou Zeng and Bernie Volz and Kim Kinnear and John Jason Brzozowski},
    title =     {{DHCPv6 Relay Agent Echo Request Option}},
    pagetotal = 6,
    year =      2007,
    month =     mar,
    day =       20,
    abstract =  {This memo defines a Relay Agent Echo Request option for the Dynamic Host Configuration Protocol for IPv6 (DHCPv6). The option allows a DHCPv6 relay agent to request a list of relay agent options that the server echoes back to the relay agent. {[}STANDARDS-TRACK{]}},
}