https://firmware-selector.openwrt.org
Customize installed packages and/or first boot script :
- Installed Packages
-dnsmasq -odhcpd-ipv6only -wpad-basic-mbedtls
dnsmasq-full wpad-openssl nano-full ip-full iperf3 tcpdump dnstop htop ss iptraf-ng diffutils ethtool-full openssh-sftp-server curl