Another Netlink: File exists

[Ondrej Zajicek]

On Mon, Oct 06, 2014 at 10:15:51AM -0400, micah wrote:
> micah <micah at riseup.net> writes:
> 
> Some additional information, I do have a handful of static routes
> defined:
> 
> protocol static static_bgp {
>         import all;
>         route 204.13.164.0/24 reject;
>         route 198.252.153.0/24 reject;
>         route 199.254.238.0/24 reject;
> }
> 
> and these appear in bird as follows:
> 
> # birdc show route |grep '!'
> 204.13.164.0/24    unreachable [static_bgp 2014-10-04] ! (200)
> 198.252.153.0/24   unreachable [static_bgp 2014-10-04] ! (200)
> 199.254.238.0/24   unreachable [static_bgp 2014-10-04] ! (200)
> 
> which I understand is bird trying to add a route to the kernel, but it
> is already there.

Yes, that is exactly the reason for having 'Netlink: File exists' error
message.

BIRD does not rewrite routes that are already in kernel table from other
sources.

If you need them in kernel regardless of BIRD, you can as a workaround
learn these routes from kernel proto and set them higher preference
(using 'preference') than ones from static proto. That would prevent
static routes to be exported to the kernel.

-- 
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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