Infer BGP 'source address' value dynamically

Eric Cables ecables at
Wed Jul 9 18:12:52 CEST 2014


That's exactly what I've done, but I was hoping this kind of configuration
data could just be defined as a local variable. Perhaps I could define a
variable that called a local script, which scraped ifconfig for the data
I'm looking for? I haven't done this before, but expect BIRD is capable of
such a construct.

Has anyone done anything like the above (call a local shell script to
populate a variable), or have an example of doing something similar?

-- Eric Cables

On Wed, Jul 9, 2014 at 5:29 AM, Frederik Kriewitz <frederik at>

> > On Tue, Jun 10, 2014 at 1:44 PM, Eric Cables <ecables at> wrote:
> >> Any thoughts? The goal is to make this configuration as dynamic as
> >> possible, so that it can be deployed to a number of systems without
> manual
> >> changes on each.
> You might want to split your config in multiple files (e.g. a common
> one and a router specific one) and include them.
> E.g. each of our bird config files contains a line like this:
> include "/etc/bird/bird.conf.local";
> In that file we specify the router id and a couple of variables used
> in otherwise common configurations.
> Best Regards,
> Freddy
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