Installation and configuration of a TFTP server

Install the tftp server package.

# dnf install tftp-server

Start and enable the tftp socket. systemd will automatically start the tftpd service when required.

# systemctl start tftp.socket
# systemctl enable tftp.socket

If you enable the TFTP service in dnsmasq, allow access by TFTP requests:
 # iptables -I INPUT -i eth1 -p udp --dport 69 -j ACCEPT