       = syscall.Errno(0x00)  ENETDOWN        = syscall.Errno(0x00)  ENETRESET       = syscall.Errno(0x00)  ENETUNREACH     = syscall.Errno(0x00)  ENFILE          = syscall.Errno(0x00)  ENOANO          = syscall.Errno(0x00)  ENOBUFS         = syscall.Errno(0x00)  ENOCSI          = syscall.Errno(0x00)  ENODATA         = syscall.Errno(0x0