Model : TD-W8968
Hardware Version : v2
Firmware Version : last version

Model : TL-WR542G
Hardware Version : v7
Firmware Version : last version

ISP : tim.it

Hello,
I have this 2 devices
TD-W8968 v2 as router connected to internet
and
TL-WR542G V7 that I wan't to use as wi-fi receiver to connect other PC via ethernet

I have try to configure the TD-W8968 v2 enabling the WDS option and inserting SSID and MAC of TL-WR542G V7
the two networks communicate with each other but the pc connected to TL-WR542G V7 via ETH have no internet access...
the pc connected to TL-WR542G V7 receive DHCP from TD-W8968 correctly, included Gateway and DNS

what is wrong?
why i can see all pc of the network but only the pc connected to TL-WR542G have no internet access?

firewall is disabled everywhere

tnx
Massimo