npf_rule_destroy
npf_rule_destroy(fpe->fpe_rl);
npf_rule_destroy(fpe->fpe_nat);
npf_rule_destroy(fpe->fpe_rdr);
npf_rule_destroy(rl);
npf_rule_destroy(nt);
npf_rule_destroy(nt);
void npf_rule_destroy(nl_rule_t *);