Long: tftp-blksize Arg: <value> Help: Set TFTP BLKSIZE option Protocols: TFTP Added: 7.20.0 --- Set TFTP BLKSIZE option (must be >512). This is the block size that curl will try to use when transferring data to or from a TFTP server. By default 512 bytes will be used. If this option is used several times, the last one will be used.