OSX: Solution: Virtualbox 4.x bridged network not working on OSX 10.9 Mavericks

Thai: แก้ปัญหา Virtualbox 4.2, 4.3 ใช้ bridged network บน OSX 10.9 ไม่ได้ 

    I'm using Virtualbox 4.2, 4.3 with OSX 10.9 the bridged network not working. The error message look like this 

'HostInterfaceNetworking-en0' (VERR_SUPDRV_COMPONENT_NOT_FOUND). 

    I'm googled, someone said if we uninstall and re-install it the problem will gone, but it's not working for me, after several reboot the problem still arise. 

    So, this is another solution. By using this script before start the Virtualbox would help/solve the problem :) 

#!/bin/bash

 

unload() {

  sudo ifconfig bridge0 down

  sudo ifconfig bridge0 unplumb

  kextstat | grep "org.virtualbox.kext.VBoxUSB" > /dev/null 2>&1 \

  && sudo kextunload -b org.virtualbox.kext.VBoxUSB

  kextstat | grep "org.virtualbox.kext.VBoxNetFlt" > /dev/null 2>&1 \

  && sudo kextunload -b org.virtualbox.kext.VBoxNetFlt

  kextstat | grep "org.virtualbox.kext.VBoxNetAdp" > /dev/null 2>&1 \

  && sudo kextunload -b org.virtualbox.kext.VBoxNetAdp

  kextstat | grep "org.virtualbox.kext.VBoxDrv" > /dev/null 2>&1 && \

  sudo kextunload -b org.virtualbox.kext.VBoxDrv

}

 

load() {

  sudo kextload /Library/Extensions/VBoxDrv.kext -r /Library/Extensions/

  sudo kextload /Library/Extensions/VBoxNetFlt.kext -r /Library/Extensions/

  sudo kextload /Library/Extensions/VBoxNetAdp.kext -r /Library/Extensions/

  sudo kextload /Library/Extensions/VBoxUSB.kext -r /Library/Extensions/

  sudo ifconfig bridge0 plumb

  sudo ifconfig bridge0 inet 192.168.2.1 netmask 255.255.255.0 broadcast 192.168.2.255 up

}

 

case "$1" in

  unload|remove)

    unload

    ;;

  load)

    load

    ;;

  *|reload)

    unload

    load

    ;;

esac

the script was from this blog. I believed that the original script was from here, forums.virtualbox.org but this one is the improved & working one :)