Why userspace rather than writing kernel space modules?

[Daniel Holmlund]

Hi everyone,
I'm a newbie to BIRD who ran across it from freshmeat.net.

Being a newbie, I have some newbie questions.

How efficient is it to sync with kernel space routing tables if the 
routing tables change rapidly?
How often does a routing table change with a typical server 
configuration and typical server traffic?
Lastly besides the portability, why implement a userspace daemon that 
is required to sync with the kernel when kernel space modules could 
be written to directly manipulate the routing tables themselves?

Thanks for answering these questions. Currently, I am EXTREMELY 
interested in this project, and would like to potentially put some 
development time into BIRD.

Daniel Holmlund


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