it is unlikely that we introduce 6to4 interface (IFT_STF) to openbsd.
it is unlikely that we introduce 6to4 interface (IFT_STF) to openbsd.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars