Bhatia, M., Zhang, D., and M. Jethanandani, "Analysis of Bidirectional Forwarding Detection (BFD) Security According to the Keying and Authentication for Routing Protocols (KARP) Design Guidelines", RFC 7492, DOI 10.17487/RFC7492, March 2015, <https://www.rfc-editor.org/info/rfc7492>.