# disable the firewall
/bin/bash ./disable_firewall.sh
-# Make sure apt-get database is up-to-date
-apt-get update -y --force-yes -qq
-
-# Install vlan for vlan based tests in VTN suites
-apt-get install -y --force-yes -qq vlan
-
-# Install netaddr package which is needed by some custom mininet topologies
-apt-get install -y --force-yes -qq python-netaddr
+# Add 'hostname' into /etc/hosts during node spinup time to avoid sudo returning
+# an 'unable to resolve host' message or some Java API's returning an unknown
+# host exception. The workaround on adding "myhostname" into /etc/nss-switch.conf
+# does not work on Ubuntu flavours.
+sed -i "/127.0.0.1/s/$/\t$(hostname)/" /etc/hosts