I wonder why OpenBSD isn't considered for a router OS. It is smaller and more conservative than the Linux kernel. They also aim for security and code auditabili

I wonder why OpenBSD isn't considered for a router OS. It is smaller and more conservative than the Linux kernel. They also aim for security and code auditability. Presumably the same utilities and packages would compile for it as well as Linux. Looks like what you'd want in a router OS. Unless it is a matter of driver support?