From your lsmod, it appears that you are compiling drivers into the kernel.
I think the Realtek 8029 uses the ne2k-pci driver. Do you have this enabled?
What is the output of:
ifconfig
Have you tried to bind the interface manually with an
ifconfig eth0 some_ip netmask some_netmask
then manually setup your default gateway with
route add default gw gateway_IP
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