Using netlink rather than route on a modern FreeBSD kernel may allow you do do the same thing but install a kernel filter on the socket just to receive interface changes.That should match your requirements.Roy Marples ---- On Sat,28 Oct 2023 15:29:01 +0100 eu...@freebsd.org wrote ----28.10.2023 23:21, Roy Marples wrote:
> What you would do is open a route socket, then call getifaddrs and then > listen on the route socket for new interfaces. > > Then you can maintain a list of current vlans and take action accordingly. I'd like to be able to make a couple of system calls only to get a list of pre-created vlans for a moment. Efficiently and scalable. Not making thousands of reads (syscalls) from routing sockets and not syncing with the kernel. Eugene
