windows error

Hi
I am playing around with a poptop box on an Ubuntu server at home. While testing the connection to the VPN server I got this very interesting result when pinging the IP, which was assigned to me by pptpd:
C:\>ping 192.168.0.210

Pinging 192.168.0.210 with 32 bytes of data:

Reply from 192.168.0.210: bytes=32 time=4ms TTL=128
Reply from 192.168.0.210: bytes=32 time=-4ms […]