recursive route lookup (was: Re: upgrade 1.2.4 - 1.3.1 reverted)

[Ondrej Zajicek]

On Wed, Oct 24, 2012 at 03:50:24PM +0200, Timo Weingärtner wrote:
> > > What's the problem with using iBGP routes for recursive lookups (when
> > > using iBGP as IGP)? The message even says that the route is resolvable.
> > 
> > BIRD does not allow recursive routes to depend on another recursive route.
> > If your iBGP is configured to generate non-recursive routes (using
> > 'gateway direct' option), then recursive routes (from another BGP)
> > could depend on that routes, but i am not sure if such setting could
> > be useful, esp. it does not work if you want to use the same iBGP session
> > for both recursive and non-recursive routes.
> 
> Let me rephrase my question: Why does BIRD not allow recursive routes to 
> depend on another recursive route. What could go wrong if it was allowed?

It is mainly for simplicity of some implementation issues and preventing problems
like mutually recursive routes.

-- 
Elen sila lumenn' omentielvo

Ondrej 'SanTiago' Zajicek (email: santiago at crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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