You need to set up your PC to be on that IP address first, TFTP doesn’t magically listen to a particular IP, you need to configure the PC with that IP.

ip link set eth0 up
ip addr add 10.10.10.3/24 dev eth0
ip addr add 10.10.10.1/24 dev eth0

Then you can start the TFTP server on the interface:

dnsmasq -d --port=0 --enable-tftp --tftp-root=/path/to/tftp/root -i eth0