We have had our AD setup using site and services for 6 months without any problem, but now I am upgrading our vpn and that is causing Site and Services to show the machines in the wrong office. We were running a vpn between the two cisco routers we had in each office, the new vpn is using openvpn.
Basically if I am on the cisco vpn everything operates as expected. As soon as I switch to the openvpn connection the machines all think they are in the other office. If I run nltest /dcgetsite it shows the other site, the logon server shows the correct local server and when I do DNS lookups it goes through the local server correctly. When I do a dns lookup of the domain it resolves to the local server.
Now if I just disconnect the vpn between the offices everything resolves to the correct site but as soon as it is back up the machines all think they are in the other office again.
In site and services I have the subnets of the openvpn connection and each local subnet pointing to the correct site.
At this point I am at a complete loss and can't figure out what to do and I have not seen or heard of someone experiencing a similar issue. I am thinking it is some sort of routing issue but I have not been able to find too many details on how the site and services actually work to pick the correct site other then the machine's subnet.