lines := strings.Split(strings.Trim(table, "\n"), "\n")
		// The first line should be, eg, "*nat" or "*filter"
		if lines[0][0] != '*' {
			return nil, fmt.Errorf("bad ruleData (table %d starts with %q)", i+1, lines[0])
		}
		// add back the "COMMIT" line that got eaten by the strings.Split above
		lines = append(lines, "COMMIT")
		tables[lines[0][1:]] = lines
	}

	if tables["nat"] == nil {