Hello,
Check /proc/sys/net/ipv4/conf/br-lan/send_redirects, /proc/sys/net/ipv4/conf/br-lan/accept_redirects and the other interfaces instead of br-lan (qmimux0, eth1 ...)
To enable: echo 1 > /proc/sys/net/ipv4/conf/br-lan/accept_redirects
To disable: echo 0 > /proc/sys/net/ipv4/conf/br-lan/accept_redirects
Regards,