Do anyone know how to delay the br-lan up?

I want to make my application run before the br-lan up. But I do not know how to delay the br-lan up.
So far I make this work via change the default uci_defaults lan.addr=192.168.0.254, after my application running, I use the command "ifconfig br-lan 192.168.1.254".
Do any guy know it?

Run set network.lan.auto=0 and then activate it whenever you want

Thank you! Is the command"wifi"?

You can start and stop the lan interface using, ifup lan and ifdown lan in the shell.