Bridged Networking Driver breaks my real network

Discussions related to using VirtualBox on Windows hosts.
TestTestington
Posts: 5
Joined: 17. Jul 2015, 21:15

Bridged Networking Driver breaks my real network

Post by TestTestington »

Is this the right place to post for support?

I installed the latest version of VirtualBox 5.0 and as soon as it was done installing my network went down. The only way to fix my network is by disabling VirtualBox NDIS6 Bridged Networking Driver. I have windows 8.1 with all the latest drivers and updates. My network adaptor is Realtek PCIe GBE Family Controller.

I need this to work so that my router can assign an IP directly to my guest machine. Please help.
Last edited by TestTestington on 31. Jul 2015, 00:01, edited 1 time in total.
Walt47
Posts: 2
Joined: 22. Jul 2015, 18:16

Re: Birdged Networking Driver breaks my real network

Post by Walt47 »

I have exactly the same problem and worked around it by disabling the "VirtualBox NDIS6 Bridging Driver". But there must be another way to get around this.
Why does not Oracle point this out. It happened on two machines already and it tookk me a while to find out how to fix it.

Oracle please tell us what we need to do!

Walt
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: Birdged Networking Driver breaks my real network

Post by mpack »

Unless you're an Oracle customer and have paid for their very expensive support contract, I wouldn't count on getting direct support from Oracle!

These are user self help forums, where we pass things we learn to other users. You have done that, so thanks! That's all we can expect here.
ugljesa
Posts: 2
Joined: 22. Jul 2015, 23:05

Re: Birdged Networking Driver breaks my real network

Post by ugljesa »

If you disable the "VirtualBox NDIS6 Bridging Driver", then you can't assign a bridged interface to a VM, so that is not a solution.

Btw, I have the same problem, but my real network keeps running, just the icon near the clock says that there is no internet connection.

Helps if you open a command prompt on host and run: ipconfig /renew
ugljesa
Posts: 2
Joined: 22. Jul 2015, 23:05

Re: Birdged Networking Driver breaks my real network

Post by ugljesa »

Maybe I have the solution.
This is what I did:
- Open Network and Sharing Center > Change adapter settings > Local Area Connection > Properties
- Click on VirtualBox NDIS6 Bridged Networking Driver and Uninstall
- Click on Install, choose Service and choose VirtualBox NDIS6 Bridged Networking Driver to re-install it
- Restart host computer
After this I don't have problems with network any more.
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: Birdged Networking Driver breaks my real network

Post by mpack »

Sounds like the old Win8 MaxNumFilters problem. In which case you may just have broken a different service on that NIC. The correct solution would be to increase the limit: I recommend Google for details.
mroshaw
Posts: 10
Joined: 6. Mar 2011, 15:59
Primary OS: MS Windows 7
VBox Version: OSE other
Guest OSses: Windows Server 2003, Windows Server 2008, Windows 7, Windows XP

Re: Birdged Networking Driver breaks my real network

Post by mroshaw »

I am experiencing the exact same problem. I'll give the MaxNumFilters fix a try and post back the outcome, when I get home from work tonight.

For anyone interested in trying this themselves:
  1. Open regedit.exe
  2. Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network\
  3. Double click MaxNumFilters
  4. Change the value to decimal 14
  5. Click OK
  6. Reboot
You may have to uninstall / re-install VB5.0

Note that if you did a fresh install of Windows 8.1, you might not see the MaxNumFilters value. In that case, Windows interprets the value as "unlimited" and so is unlikely to be related to this problem.
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: Birdged Networking Driver breaks my real network

Post by mpack »

Your post is helpful, but...
mroshaw wrote:In that case, Windows interprets the value as "unlimited" and so is unlikely to be related to this problem.
If that is true then it's a change of behaviour relative to Win8. In the latter, if unspecified then it defaults to 8. Why even have a limit if "unlimited" is a practical option? Do you have a reference for what you are saying?
TestTestington
Posts: 5
Joined: 17. Jul 2015, 21:15

Re: Birdged Networking Driver breaks my real network

Post by TestTestington »

I tried adding that reg key and restarting but it just seemed to break my network even more. ipconfig /renew doesn't work either because I can't connect to the DHCP server. Oh well, I hope this fixes itself in Windows 10 next week.
Kiran
Posts: 9
Joined: 24. Apr 2008, 19:29

Re: Birdged Networking Driver breaks my real network

Post by Kiran »

I am also having the same issue with 5.0. Windows 7 SP1 x64 host. Network card can't connect to network. I tried uninstalling/reinstalling both Virtualbox, the NDIS6 driver, and already had the MaxNumFilters set to 14.

With the NDIS6 driver unbound to the adapter I can at least connect to the network, but have to run guest OSes using NAT.

Kiran
Kiran
Posts: 9
Joined: 24. Apr 2008, 19:29

Re: Birdged Networking Driver breaks my real network

Post by Kiran »

I started a ticket on this issue. https://www.virtualbox.org/ticket/14326

Kiran
mroshaw
Posts: 10
Joined: 6. Mar 2011, 15:59
Primary OS: MS Windows 7
VBox Version: OSE other
Guest OSses: Windows Server 2003, Windows Server 2008, Windows 7, Windows XP

Re: Birdged Networking Driver breaks my real network

Post by mroshaw »

mpack wrote:Do you have a reference for what you are saying?
https://social.msdn.microsoft.com/Forum ... ?forum=wdk
Highly possible that I read that wrong, though. Apologies, if so, for misinformation.
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: Birdged Networking Driver breaks my real network

Post by mpack »

mroshaw wrote:Highly possible that I read that wrong, though. Apologies, if so, for misinformation.
Not at all. Having read it (thank you) I would interpret it the same way... I'm just not sure that it's correct, because I know we've had reports of where increasing this value cures the kind of problem described here - and this was specifically with Win8, since it seems to have become more of a problem in that version (I think Win8 defaults to having an extra filter or two in the stack, hence it has less headroom).

Unless this feature requires some sort of action from the driver which Win7 compatible drivers don't provide?
GeeGee
Posts: 1
Joined: 30. Jul 2015, 23:47

Re: Birdged Networking Driver breaks my real network

Post by GeeGee »

got the very same problem with 4.3.30 r101610 on Windows 8.1 x64.
WLAN loses connectivity, disabling and re-enabling adapter helps for a while.
TestTestington
Posts: 5
Joined: 17. Jul 2015, 21:15

Re: Bridged Networking Driver breaks my real network

Post by TestTestington »

OK, something interesting happened. I formatted and installed windows 10 and then I installed Virtual Box and now it works (on the same hardware). So there was some conflict with Windows 8 or the drivers or something.
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