Dear users of the Bird internet routing  daemon,

First of all I am sorry for my e-mail which I have sent some minutes before.

It was a mistake and you can ignore my last mail.

Now to my question:

I want my OSPF to distribute the default-route ONLY and ONLY if the ISP is available.

Means, if the link, or the IP isn’t available, my OSPF should be quite.

Further information:

ISP                         (ISP is up)                          

  l                            (Link is up)

R1                          (Interface is up)

R1: everything is ok, I can reach the ISP, so I am the default-gateway for everybody below me.

ISP                         (ISP is down)                    

  l                            (Link is up)

R1                          (Interface is up)

R1: Oh gosh! The ISP is down! I am now no longer the default-gateway for everybody below me.

ISP                         (ISP is up)                          

  l                            (Link is down)

R1                          (Interface is up)

R1: Oh, I can’t reach my ISP… Ok, I need to stop telling everybody below me I am the default-gateway.

I was thinking about the bfd protocol, but bfd is kinda new and you can’t run more than one instance in bird.

So I need another solution…

Btw, yes I’ve already searched for these problem in the mailing list but I am not satisfied.

Either my keywords were wrong or there isn’t any person with this kind of problem… yet.

Thank you very much for reading.

Regards.