These links may help
routing issues on vpn
TTL expired in transit and Destination host unreachable ... From the
server, you
receive "Destination host unreachable" when ping outside IP. ...
www.chicagotech.net/routingissuesonvpn.htm
troubleshooting ping issues
Host is unreachable Ping lists a public IP instead of private IP ...
Reply from
209.165.105.129: Destination net unreachable. ...
www.chicagotech.net/troubleshootingping.htm
routing issues on vpn
TTL expired in transit and Destination host unreachable ... You receive
Time out
or "Reply from xxxx: TTL expired in transit" when ping the server from
....
www.chicagotech.net/routingissuesonvpn.htm
troubleshooting ping issues
Hardware Error Host is unreachable Ping lists a public IP instead of
private IP
Receiving a reply from a different IP TTL expired in transit ...
www.chicagotech.net/troubleshootingping.htm
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
Homework?