For things like multiple DHCP/PD servers for multiple networks, subnetting (with dynamic prefixes), firewall rules, etc.
You can actually ditch the GUI and go to the command line with OpenWrt and do custom/weird/power-user stuff to your heart's content.
alt Hacker News
You can actually ditch the GUI and go to the command line with OpenWrt and do custom/weird/power-user stuff to your heart's content.