Just checked again, and my memory did not betray me: I am unable to set the media let alone media options. It is likely the API being too new. ixl(4) does state that one should flash their card with "the most recent (stable) firmware", but it appears this firmware is too new. You can try progressively downgrading your firmware to the newest version that does have a working API:
https://www.intel.com/content/www/us/en/download/683939/nvm-downgrade-packages-for-intel-ethernet-adapters-700-series.html
