VPN cascading on Flint is not working (4.2.0 snapshot firmware)

Hi,
what’s the compile time of the firmware for flint and slate ax? The flowing is mine.
image

Could you copy and run following command

cd /tmp
iptables-save >ipt
ip rule >ipr
ip route show table 51 >>ipr
ip route show table 52 >>ipr
tar cf ipt.tar ipt ipr
mv ipt.tar /www/ipt.zip

get debug info collection file at http://192.168.8.1/ipt.zip
and upload it. for example my setup.
ipt.zip (20.5 KB)