How to change TTl

Can anybody find me a command for modifying ttl?

What do you mean by ttl?

This all I know All IP packets contain an initial time-to-live (TTL) value that is decremented by one for every hop, or router it travels through.

Openwrt’s ttl can be changed by issue command:

echo 128 > /proc/sys/net/ipv4/ip_default_ttl