IP address, such as `-a 192.168.1.252`), and `-A` to change the IP address used for the
network interface.
-On Linux, `nmrpflash` uses interface alias `:42` by default, so if you specify `-i eth0`,
-it will actually use `eth0:42`. To override this, manually specify an alias (e.g.
-`-i eth0:43`).
-
This error message could also indicate a bug in the TFTP code; try using an external tftp
client (busybox in this example), by specifying the `-c` flag instead of the `-f` flag: