(Groovy | 12.04 | armv7l) Can't run 'roscore' nor 'roslaunch'

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Am installing ROS Groovy (from source) on a Tablet, whose Kernel is armv7l, and am having no luck when running the following command:

root@localhost:~# roscore
… logging to /home/ubuntu/.ros/log/---bunch-of-numbers----/roslaunch-localhost-22058.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
Traceback (most recent call last):
  File "/opt/ros/groovy/lib/python2.7/dist-packages/roslaunch/__init__.py", line 265, in main
    p.start()
  File "/opt/ros/groovy/lib/python2.7/dist-packages/roslaunch/parent.py", line 257, in start
    self._start_infrastructure()
  File "/opt/ros/groovy/lib/python2.7/dist-packages/roslaunch/parent.py", line 206, in _start_infrastructure
    self._load_config()
  File "/opt/ros/groovy/lib/python2.7/dist-packages/roslaunch/parent.py", line 121, in _load_config
    self.config = roslaunch.config.load_config_default(self.roslaunch_files, self.port, verbose=self.verbose)
  File "/opt/ros/groovy/lib/python2.7/dist-packages/roslaunch/config.py", line 408, in load_config_default
    config.master.uri = rosgraph.network.create_local_xmlrpc_uri(port)
  File "/opt/ros/groovy/lib/python2.7/dist-packages/rosgraph/network.py", line 281, in create_local_xmlrpc_uri
    return 'http://%s:%s/'%(get_host_name(), port)
  File "/opt/ros/groovy/lib/python2.7/dist-packages/rosgraph/network.py", line 266, in get_hostname
    hostname = get_local_addresses()
  File "/opt/ros/groovy/lib/python2.7/dist-packages/rosgraph/network.py", line 173, in get_local_address
    addrs = get_local_addresses()
  File "/opt/ros/groovy/lib/python2.7/dist-packages/rosgraph/network.py", line 211, in get_local_addresses
    ifaces = ifaddrs.getifaddrs()
  File "/opt/ros/groovy/lib/python2.7/dist-packages/rosgraph/ifaddrs.py", line 147, in getifaddrs
    addr += "%02x:" % si.sll_addr[i]
IndexError: invalid index

My Environment is:

root@localhost:~# export | grep ROS
declare -x ROS_DISTRO="groovy"
declare -x ROS_ETC_DIR="/opt/ros/groovy/etc/ros"
declare -x ROS_MASTER_URI="h t t p://localhost:11311" <-- ROS ANSWERS DOES NOT LET ME PUBLISH LINKS
declare -x ROS_PACKAGE_PATH="/home/ubuntu/ros_ws:/opt/ros/groovy/share:/opt/ros/groovy/stacks"
declare -x ROS_ROOT="/opt/ros/groovy/share/ros"

I am connected through VNC and my interface configuration is:

root@localhost:~# ifconfig

only lo and eth0 appear.

Any suggestions to get roscore and roslaunch to work?