The topic of this chapter and the previous one is troubleshooting the OpenVPN. This chapter focuses on the all-too-common routing issues that occur when setting up a VPN. As more than half of the questions asked on the openvpn-users mailing list can be traced back to routing issues, this chapter intends to provide answers to some of the more frequent routing misconfigurations.

The recipes in these chapters will therefore deal with first, breaking the things, and then, providing the tools on how to find and solve the configuration errors.