Abstract question: In my OpenVPN client setup I'd like to set routes pushed by the server only under certain conditions.
Concrete situation: I am using a laptop, that, when I am at the office, connects to our companys infrastructure via its gateway. When I am out of the office, e.g. at a customers site, I use a separate OpenVPN connection to reach our infrastructure. The twist here is, that this OpenVPN connection is also used to connect to our customers, either when I am in the office, or when I am on the road.
The routes to our customers networks and our infrastructures network get pushed everytime I connect the OpenVPN client on my laptop. There is an application running in our datacenter which gets pretty confused by the second connection, and I would like it only to use the route via our offices gateway, when I am in the office.
Question: Is there any option in OpenVPN to tell the client something like "if you have an IP adress assigned like 10.0.0.X (office-site IP address), do NOT apply one specific route pushed from the server (the route that points to our infrastructure / datacenter)".
All other routes should not be affected by the workaround / solution and the route should be pushed, when I am working from a customers site or from my home office. I cannot set up another connection that does not include the route to the datacenter, as the connection is used by co-workers too.
Researches done so far: I already worked through FAQs and manpages of OpenVPN, where I found solutions pointing to only route specific traffic or all traffic through the VPN, which is as good as setting up another connection.
