Subnet Incorrect

[Tom Rogers]

When I VPN in to my corporate network, and I run IPConfig /ALL on my client,
I have a correct IP address, the correct DNS server IP addr, the correct
WINS server IP addr, but my subnet mask is 255.255.255.255 and it should be
255.255.255.0

Every place I have looked on my servers, it is correctly setup to dole out a
255.255.255.0 Class C subnet mask.

Does anyone know where this might be coming from? I beleive it is causing me
DNS lookup errors. For example: If I user http://ipaddr/exchange, I can hit
my Exchange Server OWA. But it I use http://servername/exchange, I cannot
hit OWA. It goes to some Internet site I never heard of.

On my RRAS server I use for VPN, I have NAT routing enabled, I use a network
DHCP server (the server IP addr is properly listed in the DHCP Relay box),
and I have the internal NIC selected to find the DHCP server on.

TIA,

-Tom

 

[Bill Grant]

This will not be causing wrong DNS lookups. If you look at the routing
table rather than using IPCONFIG, you will see the true situation. It is
explained in KB 254231 . Basically, the client will have a default route to
the "received" IP address,
which means everything goes across the VPN link.

A more likely cause is that the VPN connection does not have the correct
DNS suffix set up.