iptables no longer used

[GavinKacprowicz]

How would I do this same thing for nftables?

[GavinKacprowicz]

Would this work?

Remove existing iptables entries

nft delete rule ip mangle PREROUTING iifname "usb+" ip ttl set add 2
nft delete rule ip mangle POSTROUTING oifname "usb+" ip ttl set add 2
nft delete rule ip6 mangle PREROUTING iifname "usb+" ip6 ! ip6 nexthdr icmpv6 ttl set add 2
nft delete rule ip6 mangle POSTROUTING oifname "usb+" ip6 ! ip6 nexthdr icmpv6 ttl set add 2

Move past TTL & HL hotspot detections

nft add table inet mangle
nft add chain inet mangle PREROUTING { type filter hook prerouting priority 0 ; }
nft add chain inet mangle POSTROUTING { type filter hook postrouting priority 0 ; }

nft add rule inet mangle PREROUTING iifname "usb+" ttl set add 2
nft insert rule inet mangle POSTROUTING oifname "usb+" ttl set add 2

nft add rule inet mangle PREROUTING iifname "usb+" ip protocol != icmpv6 hl set add 2
nft insert rule inet mangle POSTROUTING oifname "usb+" ip protocol != icmpv6 hl set add 2