Marking Packets

It's possible to change the DSCP field? Thanks

The only thing you can change in your packets is the cargo contents. You might be able to use this to "mark" packets so they can be recognized.

There's no way to change the DSCP field - and to be honest, this is the first time someone has asked that question. Can you elaborate on what this would acheive (ie: what your goal is in changing the DSCP field).

Thanks!