Simplify TUN/TAP receive handling
Simplify TUN/TAP receive handling

fpletz/fastd,fpletz/fastd,fpletz/fastd,fpletz/fastd,rlei/fastd-android,rlei/fastd-android,rlei/fastd-android,rlei/fastd-android,fpletz/fastd,rlei/fastd-android