Use the correct src/dst ports depending on direction (one of src or dst was wrong in each direction).
Use the correct src/dst ports depending on direction (one of src or dst was
wrong in each direction).

Report and fix from UMEZAWA Takeshi <umezawa@iij.ad.jp>

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