I experience similar problems,e.g. iptables rules disappear without a reset of the router. I can not figure out what the disapperaing triggers. I am using pptp from my router to ADSL modem (ppp0 WAN interface). I checked whether a re-establishment of the ppp session triggers the lost of iptables FORWARD rules. Indeed, the rules disappear!
How to save these (ip accounting) FORWARD rules or how to know when ppp session is re-established?




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