xfrm_flowi_dport
sel.dport = xfrm_flowi_dport(fl, &fl6->uli);
!((xfrm_flowi_dport(fl, &fl4->uli) ^ sel->dport) & sel->dport_mask) &&
!((xfrm_flowi_dport(fl, &fl6->uli) ^ sel->dport) & sel->dport_mask) &&
sel->dport = xfrm_flowi_dport(fl, &fl4->uli);
sel->dport = xfrm_flowi_dport(fl, &fl6->uli);