Recently I bought an USB 3.0 Hub with three USB 3.0 ports and one Gigabit LAN port. It is manufactured by Delock and I purchased it from Reichelt (Delock 62440).
Under Wheezy the USB part is recognized without problems but the kernel (3.2.0-4) does not have a driver for the ethernet part.
The USB Id is idVendor=0b95 and idProduct=1790, the manufacturer is ASIX Elec. Corp. and the product is: AX88179. So Google led me to a product page at Asix, where I could download the driver for kernel 2.6.x and 3.x.
mkdir -p /usr/local/src/asix/ax88179
tar -jxf AX88179_178A_LINUX_DRIVER_v1.13.0_SOURCE.tar.bz2
apt-get install module-assistant
After editing /etc/network/interfaces and doing an ifup eth1, voila, I have a new network link. I hope the hardware is as good as the installation has been easy.