BIRD 2.x and arrays

Carlo Rengo info at carlorengo.it
Wed Jun 27 16:11:17 CEST 2018


My bad, I’ve posted the log outputs in the opposite order. The first output is referred to the second configuration (the one that makes us of the array).

Thanks,
Carlo

> On 27 Jun 2018, at 15:50, Carlo Rengo <info at carlorengo.it> wrote:
> 
> Hi,
> I'm testing BIRD 2 (version 2.0.2) but I am having issue with the new syntax. More specifically, with arrays. This is a snippet of my configuration:
> 
> protocol direct direct1 {
>    interface "lo";
>    debug all;
>    ipv4 {
>        import where net ~ 192.168.60.0/24 ;
>        export none;
>    };
> }
> 
> I start bird and this is the logged output:
> 
> 2018-06-27T15:26:21.123818+02:00 my.bird.router.com bird: direct1 < address 127.0.0.0/8 on interface lo added
> 2018-06-27T15:31:19.396405+02:00 my.bird.router.com bird: direct1 < address 192.168.60.10/32 on interface lo added
> 2018-06-27T15:31:19.396527+02:00 my.bird.router.com bird: direct1 > filtered out 192.168.60.10/32 unicast
> 2018-06-27T15:31:19.396653+02:00 my.bird.router.com bird: direct1 < address 192.168.60.20/32 on interface lo added
> 2018-06-27T15:31:19.396778+02:00 my.bird.router.com bird: direct1 > filtered out 192.168.60.20/32 unicast
> 2018-06-27T15:31:19.397165+02:00 my.bird.router.com bird: direct1 < address 192.168.60.21/32 on interface lo added
> 2018-06-27T15:31:19.397295+02:00 my.bird.router.com bird: direct1 > filtered out 192.168.60.21/32 unicast
> 2018-06-27T15:31:19.397419+02:00 my.bird.router.com bird: direct1 < address 192.168.60.12/32 on interface lo added
> 2018-06-27T15:31:19.397541+02:00 my.bird.router.com bird: direct1 > filtered out 192.168.60.12/32 unicast
> 
> This works as expected. Now, if I try to use even a 1-member array, like this: 
> 
> protocol direct direct1 {
>    interface "lo";
>    debug all;
>    ipv4 {
>        import where net ~ [ 192.168.60.0/24 ];
>        export none;
>    };
> }
> 
> the result is that bird filters out my IPs. These are the relevant log lines:
> 
> 2018-06-27T15:26:21.123818+02:00 my.bird.router.com bird: direct1 < address 127.0.0.0/8 on interface lo added
> 2018-06-27T15:26:21.123943+02:00 my.bird.router.com bird: direct1 < address 192.168.60.10/32 on interface lo added
> 2018-06-27T15:26:21.124277+02:00 my.bird.router.com bird: direct1 > added [best] 192.168.60.10/32 unicast
> 2018-06-27T15:26:21.124406+02:00 my.bird.router.com bird: direct1 < address 192.168.60.20/32 on interface lo added
> 2018-06-27T15:26:21.124534+02:00 my.bird.router.com bird: direct1 > added [best] 192.168.60.20/32 unicast
> 2018-06-27T15:26:21.124913+02:00 my.bird.router.com bird: direct1 < address 192.168.60.21/32 on interface lo added
> 2018-06-27T15:26:21.125041+02:00 my.bird.router.com bird: direct1 > added [best] 192.168.60.21/32 unicast
> 2018-06-27T15:26:21.125177+02:00 my.bird.router.com bird: direct1 < address 192.168.60.12/32 on interface lo added
> 2018-06-27T15:26:21.125304+02:00 my.bird.router.com bird: direct1 > added [best] 192.168.60.12/32 unicast
> 
> "import where net ~" + "array" has always worked fine with BIRD 1.6. Did the syntax change on v2? Is this a bug? 
> 
> Thanks,
> Carlo




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