1 This target marks packets so that the kernel will log every rule which match 2 the packets as those traverse the tables, chains, rules. 3 .PP 4 A logging backend, such as ip(6)t_LOG or nfnetlink_log, must be loaded for this 5 to be visible. 6 The packets are logged with the string prefix: 7 "TRACE: tablename:chainname:type:rulenum " where type can be "rule" for 8 plain rule, "return" for implicit rule at the end of a user defined chain 9 and "policy" for the policy of the built in chains. 10 .br 11 It can only be used in the 12 .BR raw 13 table. 14