I would like to use an external hardware RNG which supplies entropy via network socket.  FreeBSD does not support external RNG/entropy source in the kernel, but does in user space. Ok, that's fine if I'm building my own application to utilize the external entropy source - but how can I implement it so existing applications which use /dev/random would also use my extra entropy source? My understanding is the answer is you can't  but would love to be wrong on this.
How can I use an external hardware RNG in FreeBSD?
freebsd;devices;random