The continuous-request row said a -d 0 request never reaches the wire,
which no observation in this validation supports: the run took no packet
capture and the server was not instrumented for datagram arrival, so
what the client emitted before exiting was never seen.
Record what was actually observed — the argument was refused, the client
exited non-zero, and it printed none of the connection line it prints in
every other scenario — and state plainly that the emission was not
observed. The conclusion that matters is unchanged: continuous mode was
not exercisable through this CLI.
No implementation, test or protocol evidence changes.