r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_FASTOPEN_KEY(r0, 0x6, 0x21, &(0x7f0000000180)="86d776143a273c7d39d5ba175a36ab6b", 0x10)
close(r0)