== Firmware update using dnsmasq I using using a Fedora 25 system and the RB260GSP port 1 is connected to my ethernet port (enp4s0). Stopping firewall to allow DHCP/TFTP inbound {{{ sudo systemctl stop firewalld }}} Firmware file needs specific name {{{ cp swos-rb260-1.17.lzb /tmp/fw.260 cd /tmp }}} Starting dnsmasq with TFTP/bootp option {{{ sudo dnsmasq --interface enp4s0 --bind-interfaces --no-daemon --port 0 --dhcp-range 192.168.1.100,192.168.1.200,12h --dhcp-authoritative \ --dhcp-host=00:00:00:00:01:01,192.168.1.101 --enable-tftp --tftp-root=`pwd` --log-queries --log-dhcp }}} Start firmware upgrade: 1. Power-off RB260GSP 1. Press-and-hold reset button 1. Power-on RB260GSP 1. Wait till ACT led starts flashing very fast (it first flashes slowly). }}}