WIZnet WIZ550io

BTW: thanks for all this response :-)

@DrAzzy: if i set the ip manually, i can ping this ip address. This works as describe above. Unfortunately, my home router (apple airport extreme) doesn't show the client connections or don't find it yet. But after set the ip manually, i can create a routing table and the device is listed:

Routing tables:
Destination        Gateway            Flags        Refs      Use   Netif Expire
default            192.168.1.1        UGSc           12        1     en1
192.168.1.2        0:8:dc:1d:4f:18    UHLWI           0      115     en1   1181

So i test now another breadboard, same issue.