- OF1.0 and OF1.1: wwww/x,yy/z means dl_vlan wwww, OFPFW_DL_VLAN
x, dl_vlan_pcp yy, and OFPFW_DL_VLAN_PCP z. ? means that the
- given nibble is ignored (and conventionally 0 for wwww or z,
+ given nibble is ignored (and conventionally 0 for wwww or yy,
conventionally 1 for x or z). <none> means that the given match
is not supported.