source file. They cannot include it, because the kernel route
structure has a name conflict with the openvpn route structure.
The obvious solution is to rename the openvpn route. According to
the sources, NetBSD and FreeBSD and Dragonfly also suffer from that.
This change is needed for an upcoming routing message change. We
do not want to patch the port each time when we change the system
header file.
Test and OK sthen@
