| Henrik Nordstrom | c279413 | 2004-01-22 15:04:24 +0000 | [diff] [blame] | 1 | This is used to modify the IPv4 TTL header field. The TTL field determines |
| 2 | how many hops (routers) a packet can traverse until it's time to live is |
| 3 | exceeded. |
| Jan Engelhardt | aeafdb8 | 2008-08-12 11:42:04 +0200 | [diff] [blame^] | 4 | .PP |
| Henrik Nordstrom | c279413 | 2004-01-22 15:04:24 +0000 | [diff] [blame] | 5 | Setting or incrementing the TTL field can potentially be very dangerous, |
| 6 | so it should be avoided at any cost. |
| Jan Engelhardt | aeafdb8 | 2008-08-12 11:42:04 +0200 | [diff] [blame^] | 7 | .PP |
| Henrik Nordstrom | c279413 | 2004-01-22 15:04:24 +0000 | [diff] [blame] | 8 | .B Don't ever set or increment the value on packets that leave your local network! |
| 9 | .B mangle |
| 10 | table. |
| 11 | .TP |
| 12 | .BI "--ttl-set " "value" |
| 13 | Set the TTL value to `value'. |
| 14 | .TP |
| 15 | .BI "--ttl-dec " "value" |
| 16 | Decrement the TTL value `value' times. |
| 17 | .TP |
| 18 | .BI "--ttl-inc " "value" |
| 19 | Increment the TTL value `value' times. |