The 6LoWPAN stack includes the RF network level (above IEEE 802.15.4) also. Therefore, some kind of RF mesh network can be created.
The solution is mainly depends on your needs. As an example you can use CC2530 as ZNP, some cheap controller as ZAP and some cheap controller as Ethernet enabler. Another variant is to use CC2530 as ZNP and some Ethernet-on-board chip as ZAP.
Regards,
Ilya