F06-BP: Yes
Rationale
The retained capability requires BPSec payload confidentiality with the security source at the bundle source, the security acceptor at the final destination and decryption keys unavailable to intermediaries. RFC 9172 explicitly identifies this as end-to-end protection. TCPCL TLS alone is insufficient. This does not establish the mandatory admission/provenance gate still open in F16/F21.
Assessment method
Individual review of inherited classification; no protocol execution
Source context
Primary specification / explicit endpoint and observer scope