provisioner/vagrant/gen_hosts.sh

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# to you under the Apache License, Version 2.0 (the
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#     http://www.apache.org/licenses/LICENSE-2.0
#
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echo "# Do not remove the following line, or various programs" > /etc/hosts
echo "# that require network functionality will fail." >> /etc/hosts
echo "127.0.0.1		localhost.localdomain localhost" >> /etc/hosts

function get_inet_iface(){
  route | grep default | awk '{print $8}'
}

function get_ip() {
  ip addr | grep 'inet ' | grep -E "($(get_inet_iface))" | awk '{ print $2 }' | awk -F'/' '{print $1}'
}

HOST=$(get_ip)
NUM=5
while [ -z "$HOST" ]; do
  HOST=$(get_ip)
  sleep 5
  NUM=$(($NUM-1))
  if [ $NUM -le 0 ]; then
    HOST="127.0.0.1"
    echo "Failed to update IP"
    break
  fi
done
echo "$HOST	`hostname`" >> /etc/hosts

echo 0 > /proc/sys/kernel/hung_task_timeout_secs
ethtool -K $(get_inet_iface) tso off