Right. I did not see how *not* to strip the sectag in the h/w back then,
I'll have another look because that would improve things a lot.

@all: do other MACsec offloading hardware allow not to stip the sectag?

I've just checked this, and see an action option in our HW classifier to keep
macsec header with optional error information added. But we've never
experimented configuring this honestly, I don't think we should rely in general
design that such a feature is widely available in HW.

Regards,
  Igor