VPN Users having Issues connecting to internal resources

It looks like to me that somehow when users are VPNd in they are still
resolving DNS from their ISP DNS.

I am affected at home as well. When I ping an internal box via "ping
tatl0s11" it adds the suffix and then tries to ping via the internet.

I had to create a host file entry to get my firewall client to reach

I am not sure what has happened. Nothing changed that I can recall...
event logs look normal. Rebooted client boxes, reset routers, etc.

Any thoughts as to where to start looking are appreciated.

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