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[Openvpn-users] Issue with TAP-Win32 adapter


  • Subject: [Openvpn-users] Issue with TAP-Win32 adapter
  • From: "Paul Culmsee" <Paul.Culmsee@xxxxxxxxx>
  • Date: Tue, 2 Mar 2004 11:10:11 +0800

I have seen an issue on Win2000/2003 with RRAS running. It may be
something really dumb I'm doing.. But the TAP-Win32 adapter has 2 ip
addresses immediately after installation. 

When starting the openvpn config I see the following in an ipconfig
command..

Ethernet adapter SSHVPN:

   Connection-specific DNS Suffix  . :
   IP Address. . . . . . . . . . . . : 10.3.0.1
   Subnet Mask . . . . . . . . . . . : 255.255.255.252
   IP Address. . . . . . . . . . . . : 0.0.0.0
   Subnet Mask . . . . . . . . . . . : 0.0.0.0
   Default Gateway . . . . . . . . . :

Then after a time it will get a 169 APIPA type address for the second
IP.

This occurred whether I had the TCPIP properties of the interface set to
DHCP vs a staticly assigned address.

Now I did the following and at some point it went away..

1. Disabled RRAS
(checked and problem still there. Killed the VPN and then reinitialized
it - same prob)
2. Change the properties of the TAP interface from Application
Controlled to Always Connected. Enabled the interface (it had a static
address in TCPIP properties).

Now we have a single IP address. I reverted back to application
controlled and it *still* has a single IP address

I re-enabled RRAS and its still happy. Rebooted and all ok.

Has anybody seen this behaviour?

Thanks

Paul


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