Parsing Gigamon Source Interface tagging into logs

Hello, and good afternoon all,

My team and I currently have several different inline taps on a single gigamon, due to hardware limitations we’re unable to map them separately and parse the difference in tap locations based on nic in our sensor stack, so we’re currently tagging our traffic using the gigamon, which appends a 21 byte “header” to the end of each packet varying dependent on the collection interface. We were hoping someone has run into a similar issue before, and would be willing to share, before we have to build/modify a plugin to handle it.
Thank you for your time!