NPF_CMD_RULE_REMKEY
nvlist_add_number(rule_nvl, "command", NPF_CMD_RULE_REMKEY);
case NPF_CMD_RULE_REMKEY: {
{ "rem", NPF_CMD_RULE_REMKEY, true },
{ "del", NPF_CMD_RULE_REMKEY, true },
case NPF_CMD_RULE_REMKEY: