GL-MT300N V3.212 ttl trick not working

hi after updated from 3.105 to 3.12(GL-MT300N-V2 (Mango)
i find this rules not working anymore.
iptables -t mangle -I POSTROUTING 1 -j TTL --ttl-set 65

how to make it work again? thanks

Can you try

iptables -t mangle -I POSTROUTING  -j TTL --ttl-set 65

Yes. Working in v3.105. but in v3.212 not working.

Just wonder if you can see the iptables command I posted is different from yours.