Blame
| 6f1ace | Samuli Seppänen | 2025-02-11 11:15:58 | 1 | # I can ping through the tunnel, but any real work causes it to lock up. Is this an MTU problem? |
| 2 | ||||
| 3 | Probably. It's best to change the `mssfix` parameter rather than directly changing the MTU of the TUN/TAP adapter. For example: |
|||
| 4 | ||||
| 5 | ``` |
|||
| 6 | mssfix 1200 |
|||
| 7 | ``` |
|||
| 8 | ||||
| 9 | You could also combine this with: |
|||
| 10 | ||||
| 11 | ``` |
|||
| 12 | fragment 1200 |
|||
| 13 | ``` |
|||
| 14 | ||||
| 15 | Note however that `fragment` will exact a performance penalty. |
|||
| 16 | ||||
| 17 | Common values to try for `mssfix`/`fragment`: 1200, 1300, or 1400. |
|||
| 18 | ||||
| 19 | Note that while `mssfix` only needs to be specified on one side of the connection, `fragment` should be specified on both. |