"iptables_fw_destroy_mention" does not always delete the desired rules

[imnobodyet]

Hi, all
The function "iptables_fw_destroy_mention" deletes iptables rules by specify rule numbers (selected by matching the given string), normally it does right, but in rare cases if some other rules are inserted by other apps after it gets the rule list and before it deletes it, the rule numbers of the list are no longer the right ones, hence it deletes the wrong rules. (in my case, I have multiple wifidog instance running, and sometimes one's rules are deleted by others)

One of my thought is to use "-S" instead of "-L" option, i.e, using
"iptables -w -t TABLE -S CHAIN| grep -F 'MENTION'" to select desired rules string, and then delete them by using these rules string.