Windows 8 and VPN client DHCP

[mesa57]

Following setup :

VPN server on a XP machine with a virtual hub bridged to local lan
VPN client on a windows 8 (VM)

Connections succeeds but dhcp request fails because the client is requesting a IPV6 address. The router on the server side is not able to deliver that.
On windows 7 this does not occcur.

Does anyone know why in W8 the client is asking for a IPV6 address ?

[kh_tsang]

Check your IPv4 settings on your network adapter.

[mesa57]

IPV4 is active. And if I disable IPV6 dhcp will assign an IPV4 address.
But thats also happening in W7 with IPV6 active, the dhcp server is not able to deliver IPV6 addresses.
In W8 it does not assign a IPV4 address, so I wonder why ?

[inten]

You could tell us which SoftEther version you have and which model you use http://www.softether.org/4-docs/1-manua ... N_Networks, what VPN client would be great to know. At least!
Just realize, in order to help you we need to know as much as possible about your installation.

[inten]

Have just deployed a VM with Windows XP and installed the latest SoftEther VPN Server, after connected the Windows VM to the VPN Server. As a result Windows 8.1 received an IPv4 address from the bridged local network. Then disconnected. Disabled IPv6 support on the Windows 8.1 interface and connected again, IPv4 address received. Everything works fine.

[mesa57]

I am using softether version 2.00 (latest build) for both server and client.
The server is installed on a windows XP SP3 machine which is connected to a linksys DD-WRT V24 router. The ISP not implemented IPV6 yet nor is a tunnel configured in the router.
On the softether server there is 1 virtual hub, locally bridged to the single physical network card. No special configuration further.

The client (located physical 100 km's away) is a windows 8 vmware virtual machine.
It's networkcard is bridged with the host (still running XP SP3). The only special configuration here is on the VPN virtual netword interface : automatic metric is enabled to prevent that internet access on the client is going thru the tunnel.

So the only difference with Inten's setup is that the server is on a real (XP) machine whilest the client is on a virtual one (windows 8 on vmware workstation).

[kh_tsang]

Perhaps you need to wait for the developers.

[inten]

mesa57 wrote:

> On the softether server there is 1 virtual hub, locally bridged to the
> single physical network card. No special configuration further.

Q: Is your Windows XP connected to the router by the same adapter that is bridged to the VPN Server installed on the Windows XP machine? Why do you bridge a connection by the single network adapter?

> So the only difference with Inten's setup is that the server is on a real
> (XP) machine whilest the client is on a virtual one (windows 8 on vmware
> workstation).

Major difference with my test installation was SoftEther VPN Server has had a bridged connection to the second virtual network adapter but not the same that was connected to the "provider".

[mesa57]

inten wrote:
> Q: Is your Windows XP connected to the router by the same adapter that is bridged to
> the VPN Server installed on the Windows XP machine? Why do you bridge a connection by
> the single network adapter?

Yes, it is the same adapter. The PC only contains 1 adapter. I am trying to use that PC as a gateway to a local lan (with 5 pc's). The client should receive an IP address in the same subnet as that local lan so it can access all devices (printers, file share etc.). Thats why I installed a local bridge on the server.

Some new insight : It looks like it has to do with something on the W8 client.
I installed a new W8.1 vm (to test if there are any problems with the softether client on w8.1) and there the phenomanim did not occur. Even with IPV6 enabled on the vpn adapters the dhcp gets an IPV4 address from the server. So I am going to investigate further my W8 installation.

BTW : Softether client runs fine on W8.1 exept that the first default adapter name 'VPN' resulted in hanging the application. After choosing 'VPN2', everything went fine :)

[inten]

I would say this is not a Windows version issue... but will try again with Windows 8.0

Could you try with a clean W8 install?

[mesa57]

I works now, but I do not know why.