[+] listener on 127.0.0.1:18097 (sfd=3)
[*] setsockopt(TCP_SIGNATURE_ENABLE) -> -1 errno=42 (Protocol not available)
[!] TCP_SIGNATURE is NOT compiled into this kernel.
[!] tcp_output.c:779-800 signature-append block is dead code (#ifdef TCP_SIGNATURE).
[!] setsockopt(TCP_SIGNATURE_ENABLE) cannot arm TF_SIGNATURE.
[!] RESULT: bug UNREACHABLE on this kernel (latent code defect).
RUN_EXIT=5