That said -- try disabling the tap-win32 adapter. If you still see the issue, you'll have ruled out OpenVPN as its cause.
OpenVPN-devel is intended for those who are actively involved in working
on OpenVPN's source code. Your issue is more appropriate for
OpenVPN-users, as it discusses usage rather than development of OpenVPN.
- [Openvpn-devel] XP DHCP problems? Hans Fugal
- [Openvpn-devel] Re: XP DHCP problems? Charles Duffy