Sending to linux serial tty from embedded system too fast

I use an embedded computer to send data to a Linux serial port for transfer to a remote server. The terminal mode is "none". After my embedded system logs in, it sends data for example, printf "123456789ABCDEF" | netcat -u -q 5 dest_addr dest_port The data arrives at the remote server correctly, but the Linux terminal echos back repeated fragments of the data and lots of \08 Using the above case as a truncated example (actual data is 200 bytes), what is echoed back to my embedded system looks like this: user@mymachine:~$ printf 1234 <4567 \08\08\0889ABC \08\08\08\08