Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Week | Date | Opponent | Results\nFinal score | Results\nTeam record | Venue | Attendance |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | September 20 | at Detroit Lions | W 16–13 | 1–0 | Tiger Stadium | 54,418 |
| 2 | September 26 | Chicago Bears | L 20–17 | 1–1 | Metropolitan Stadium | 47,900 |
| 3 | October 3 | Buffalo Bills | W 19–0 | 2–1 | Metropolitan Stadium | 47,900 |
| 4 | October 10 | at Philadelphia Eagles | W 13–0 | 3–1 | Veterans Stadium | 65,358 |
| 5 | October 17 | at Green Bay Packers | W 24–13 | 4–1 | Lambeau Field | 56,263 |
| 6 | October 25 | Baltimore Colts | W 10–3 | 5–1 | Metropolitan Stadium | 49,784 |
| 7 | October 31 | at New York Giants | W 17–10 | 6–1 | Yankee Stadium | 62,829 |
| 8 | November 7 | San Francisco 49ers | L 13–9 | 6–2 | Metropolitan Stadium | 49,784 |
| 9 | November 14 | Green Bay Packers | W 3–0 | 7–2 | Metropolitan Stadium | 49,784 |
| 10 | November 21 | at New Orleans Saints | W 23–10 | 8–2 | Tulane Stadium | 83,130 |
| 11 | November 28 | Atlanta Falcons | W 24–7 | 9–2 | Metropolitan Stadium | 49,784 |
| 12 | December 5 | at San Diego Chargers | L 30–14 | 9–3 | San Diego Stadium | 54,505 |
| 13 | December 11 | Detroit Lions | W 29–10 | 10–3 | Metropolitan Stadium | 49,784 |
| 14 | December 19 | at Chicago Bears | W 27–10 | 11–3 | Soldier Field | 55,049 |
Question:
which is the only opponent to have used the lambeau field?
Answer:
Green Bay Packers