F08-AX: Yes
Rationale
Endpoint circuit identifiers do not encode intermediate routes. Switching an available next hop can preserve the same circuit before its timeout; endpoint relocation and arbitrary outages are not credited.
Assessment method
Primary-document analysis and bounded architectural inference; no execution
Source context
The NET/ROM Protocol: network/transport format and routing; historical primary document
Outstanding qualification
Pin an implementation; establish a circuit with two known routes, fail one crosslink and confirm unchanged endpoint circuit identifiers and successful delivery before timeout. No execution performed.