How to check if your VPN is working

One of the disconcerting things about using a virtual private network (VPN) is that it can be hard to tell when it's doing ...
Ars Technica

Can ping via IPv4, can't ping IPv6

All are assigned static IPv4 and IPv6 addresses. One of the Server 2008 SP2 boxes also runs DHCPv4 and 6. DNS works just fine. If I ping by name, I am typically returned the IPv6 address of that ...