Allow to control 192.168.1.1 redirect
This should be just an option to set
firewall.redirect_192_168_1_1.enabled in UCI.
firewall.redirect_192_168_1_1 section is only there if appropriate package is installed. That should be somehow advertised to frontend and no checkbox should be displayed for it.
Note that in default
enabled is set as
1 that means it is enabled.