target = "https://www.rfc-editor.org/rfc/rfc9002#section-7" [[exception]] quote = ''' If a sender uses a different controller than that specified in this document, the chosen controller MUST conform to the congestion control guidelines specified in Section 3.1 of [RFC8085]. ''' reason = ''' The default CUBIC congestion controller is similar to the NewReno controller specified. Alternative congestion controllers can be provided and should conform to the guidelines. Ultimately, this means this requirement cannot be guaranteed by s2n-quic alone. '''