@techreport{zl-lsr-igp-sub-interface-relationship-00,
    number =    {draft-zl-lsr-igp-sub-interface-relationship-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-zl-lsr-igp-sub-interface-relationship/00/},
    author =    {Li Zhang and Jie Dong and Chenxi Li},
    title =     {{IGP Extensions for Sub-interface Relationship Information}},
    pagetotal = 8,
    year =      2026,
    month =     feb,
    day =       28,
    abstract =  {This document extends ISIS and OSPF, allowing a network device to advertise the relationship between a physical interface and its sub- interfaces. This extension enables the links based on sub-interfaces to participate in the alternative paths for load balancing in SRv6 BE bandwidth polling.},
}