Rob Austein. DNS Name Server Identifier (NSID) Option. RFC, 5001:1-11, August 2007. [doi]
@article{rfc5001, title = {DNS Name Server Identifier (NSID) Option}, author = {Rob Austein}, year = {2007}, month = {August}, doi = {10.17487/RFC5001}, url = {https://doi.org/10.17487/RFC5001}, researchr = {https://researchr.org/publication/rfc5001}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {5001}, pages = {1-11}, }