Form submission: Hide/Manipulate IP variable

HTML form that re-submits data to another site

[kmander]

Essentially, I have a HTML form that submits the data to the action value of a HTML form of another site. This other site tracks the IP address of the sender. I assume that this would then be the server IP of my site.

Is it possible to:
A) Manipulate it so that the IP address is hidden?
B) Scramble the IP ie. randomly generated/incremental
C) Send out the users IP address?

Aim: to prevent the other site believing that all the form submissions originate from the same IP address.

Any other solutions? ideas?

Many thanks guys! :)

[drbrain]

No. It is using the host sending the form submission as the sending address. No reliable, repeatable way to fake/spoof/etc your IP address without sending from some other address.

[kmander]

Ok - thanks for your help.