%% You should probably cite rfc8213 instead of this I-D. @techreport{ietf-dhc-relay-server-security-04, number = {draft-ietf-dhc-relay-server-security-04}, 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-relay-server-security/04/}, author = {Bernie Volz and Yogendra Pal}, title = {{Security of Messages Exchanged Between Servers and Relay Agents}}, pagetotal = 8, year = 2017, month = mar, day = 29, abstract = {The Dynamic Host Configuration Protocol for IPv4 (DHCPv4) has no guidance for how to secure messages exchanged between servers and relay agents. The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) states that IPsec should be used to secure messages exchanged between servers and relay agents, but does not require encryption. And, with recent concerns about pervasive monitoring and other attacks, it is appropriate to require securing relay to relay and relay to server communication for DHCPv6 and relay to server communication for DHCPv4.}, }