EAPOL_KEY_WPA_KID_SHIFT
kid = (info >> EAPOL_KEY_WPA_KID_SHIFT) & 3;
info |= (k->k_id & 0x3) << EAPOL_KEY_WPA_KID_SHIFT;
info |= (k->k_id & 3) << EAPOL_KEY_WPA_KID_SHIFT;