Hi Florian i recheck and libxt_DNAT.so is symlink to libxt_NAT.so and i try : iptables v1.8.9 (nf_tables) Usage: iptables -[ACD] chain rule-specification [options] iptables -I chain [rulenum] rule-specification [options] iptables -R chain rulenum rule-specification [options] iptables -D chain rulenum [options] iptables -[LS] [chain [rulenum]] [options] iptables -[FZ] [chain] [options] iptables -[NX] chain iptables -E old-chain-name new-chain-name iptables -P chain target [options] iptables -h (print this help information) Commands: Either long or short options are allowed. --append -A chain Append to chain --check -C chain Check for the existence of a rule --delete -D chain Delete matching rule from chain --delete -D chain rulenum Delete rule rulenum (1 = first) from chain --insert -I chain [rulenum] Insert in chain as rulenum (default 1=first) --replace -R chain rulenum Replace rule rulenum (1 = first) in chain --list -L [chain [rulenum]] List the rules in a chain or all chains --list-rules -S [chain [rulenum]] Print the rules in a chain or all chains --flush -F [chain] Delete all rules in chain or all chains --zero -Z [chain [rulenum]] Zero counters in chain or all chains --new -N chain Create a new user-defined chain --delete-chain -X [chain] Delete a user-defined chain --policy -P chain target Change policy on chain to target --rename-chain -E old-chain new-chain Change chain name, (moving any references) Options: --ipv4 -4 Nothing (line is ignored by ip6tables-restore) --ipv6 -6 Error (line is ignored by iptables-restore) [!] --protocol -p proto protocol: by number or name, eg. `tcp' [!] --source -s address[/mask][...] source specification [!] --destination -d address[/mask][...] destination specification [!] --in-interface -i input name[+] network interface name ([+] for wildcard) --jump -j target target for rule (may load target extension) --goto -g chain jump to chain with no return --match -m match extended match (may load extension) --numeric -n numeric output of addresses and ports [!] --out-interface -o output name[+] network interface name ([+] for wildcard) --table -t table table to manipulate (default: `filter') --verbose -v verbose mode --wait -w [seconds] maximum wait to acquire xtables lock before give up --line-numbers print line numbers when listing --exact -x expand numbers (display exact values) [!] --fragment -f match second or further fragments only --modprobe=<command> try to insert modules using this command --set-counters -c PKTS BYTES set the counter during insert/append [!] --version -V print package version. and show help . same here i test with both : iptables-nft and iptables-legacy restore to version 1.8.8 and all is fine. i will try to rebuild and recheck if same is happen will update you. m. > On 2 Mar 2023, at 12:43, Florian Westphal <fw@xxxxxxxxx> wrote: > > Martin Zaharinov <micron10@xxxxxxxxx> wrote: >> iptables -t nat -A PREROUTING -d 100.91.1.238/32 -i bond0 -p tcp --dport >> 7878 -j DNAT --to-destination 10.240.241.99:7878 >> iptables v1.8.9 (legacy): unknown option "--to-destination" >> Try `iptables -h' or 'iptables --help' for more information. > > Looks like a problem with your iptables installation which can't find > libxt_DNAT.so? In v1.8.9 this should be a symlink to libxt_NAT.so. > > If you run 'iptables -j DNAT --help' and it doesn't say > > "DNAT target options:" at the end then it very much looks like a > problem with your iptables installation and not the kernel. > >> try with kernel 6.1.11 6.1.12 6.1.13 > > Tested iptables-nft and iptables-legacy on 1.8.9 with kernel 6.1.14, no problems. > > There were no significant kernel changes in this area that I know of in > 6.1 either.