kern/134931:[route] [fib] Route messages sent to all socket listeners regardless of setfib

[Bruce Simpson]

Stef Walter wrote:
>  I agree in principle with Mark that having future route messages might
>  be able to let routing daemons differentiate between various fibs and
>  manage them, and that this might be a feature.... However any
>  implementation of that would likely break API and ABI, and very probably
>  exist purely in FreeBSD 9.x.
>   

Surely a good time for someone to act on the suggestion that we 
implement the Netlink socket family? It is a Tag-Length-Value protocol, 
so it can easily adapt to new additions.

It exists as an informational RFC, therefore it is not encumbered by the 
GPL; however it would need to be carefully implemented in FreeBSD.

It's who dares wins -- I wouldn't object to doing it, but I'm committed 
to doing other stuff for the moment.