Hello, Well I was hoping for something like import filter { if env.somevariable = 0 then reject; accept; }; And then somehow set somevariable via birdc.... But using symlinks sounds better than overwriting config files. Thanks ico On 21. 2. 2021 11:43, Alexander Zubkov wrote:

Hello,

I do almost the same, but do not rewrite the config. I have an include in the place I want to change to a symlinked file. I change the symlink and reload the config. So I have my configs static, I change only symlinks.

On Fri, Feb 19, 2021 at 2:44 AM ico <ico@petrzalka.net> wrote:

...

Hello,

Is there some way to change bird's configuration on some external event? I would use it like this:

There are 2 routers, active and passive. Active router exports default route for the rest of network. Passive router has exactly the same configuration, but filters out default route. When active/passive switch function, the new active somehow removes default route filter, the new passive adds default route filter.

Another usage would be to change interface cost in OSPF at run-time and thus redirecting traffic from that particular interface.

Currently I am doing it with rewritting bird's config file and reloading configuration. Is there some better way? Like setting some variable, which causes changes some filter conditions?

Thanks

ico