func iptablesDeleteOld(ipt iptables.Interface) { // DEPRECATED: The iptablesOldPortalChain is from when we had a single chain // for all rules. We'll unilaterally delete it here. We will remove this // code at some future date (before 1.0). ipt.DeleteRule(iptables.TableNAT, iptables.ChainPrerouting, "-j", string(iptablesOldPortalChain)) ipt.DeleteRule(iptables.TableNAT, iptables.ChainOutput, "-j", string(iptablesOldPortalChain)) ipt.FlushChain(iptables.TableNAT, iptablesOldPortalChain) ipt.DeleteChain(iptables.TableNAT, iptablesOldPortalChain) }