[OpenVPN home] [Date Prev] [Date Index] [Date Next]
[OpenVPN mailing lists] [Thread Prev] [Thread Index] [Thread Next]
Google
 
Web openvpn.net

[Openvpn-users] Windows XP SP2 ignoring DHCP offer


  • Subject: [Openvpn-users] Windows XP SP2 ignoring DHCP offer
  • From: "Martin Wallgren" <ix@xxxxxxx>
  • Date: Fri, 25 Mar 2005 18:25:16 +0100

Hi!
 
I'm running OpenVPN 2.0rc17 on Windows XP Pro with SP2. No third-party firewalls is installed and the built-in firewall in XP is disabled for the TAP interface. I'm connecting to a remote server and according to the log a subnet is allocated (10.8.0.28/30). When using ip-win32 dynamic I can see in windump and ethereal that Windows sends a DHCP request and 10.8.0.29 sends a DHCP offer. This is repeated four times.
 
Somehow Windows ignores the DHCP offer and assign an IP in the 169.254.x.x range.
 
I also tried using ip-win32 manual configuration with 10.8.0.30/30 and the route is added for 10.8.0.0/24 via 10.8,0.29. When I try to ping the host at 10.8.0.1 only ARP request is transmitted. For every ping an ARP request is sent asking for MAC of 10.8.0.29 and the reply coming in. Nothing shows up in the ARP table.
 
It seems like everything sent to the interface is ignored.
 
I tried the same configuration in VMWare and Windows 2000 with success.
 
Any hints on why the packets drop?
 
/ Martin