Help me convert this MT firewall rule on my mt2500

Router
1

Hi. Anyone can help me. What is equivalent firewall rule on my mt2500(openwrt21).? thanks in advance

/ip firewall mangle add chain=postrouting out-interface=BR-LAN action=change-ttl ttl=1

2

I would assume it should be

iptables -t mangle -A POSTROUTING -o br-lan -j TTL --ttl-set 1
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3

thank you. It's working.

4

Hi admon. for higher version of openwrt with nftables? ty

5

Did not try, but maybe it works:

nft add table ip mangle
nft add chain ip mangle postrouting { type route hook postrouting priority mangle \; }
nft add rule ip mangle postrouting oif "br-lan" ttl set 1
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