show route for ... filtered (not working)

[Alexander Zubkov]

Hi,

I suppose it could happen because "for" is looking for an active route
for the given destination. And filtered routes would not be matched.

On Sun, May 12, 2019 at 3:57 AM Terra Nova <terratech at gmail.com> wrote:
>
> Greetings,
>
> Ubuntu-16.04.6 LTS
> bird-1.6.6 (built from source)
>
> Our upstream BGP configuration is using:  import keep filtered on
>
> I was checking the master table for a (filtered) destination IPv6 address (and network) doing the following.
> bird> show route for 2620:0:6b0:ff00::20
> Network not in table
>
> bird> show route for 2620:0:6b0:ff00::20 all
> Network not in table
>
> bird> show route for 2620:0:6b0:ff00::20 filtered
> Network not in table
>
> bird> show route where bgp_path ~ [= * 23028 =]
>
> bird> show route where bgp_path ~ [= * 23028 =] filtered
> 2604:8800::/32      via 2001:590::xxxx:xxxx on edge.411 [gtt6        01:53:36] * (100 /  95)    [AS 820048060 174 23028i]
> 2620:0:6b0::/48     via 2001:590::xxxx:xxxx on edge.411 [gtt6        01:53:36] * (100 /  95)    [AS 820048060 174 23028i]
>
> bird> show route filtered for 2604:8800::/32
> Network not in table
>
> bird> show route for 2604:8800::/32 filtered
> Network not in table
>
> bird> show route for 2620:0:6b0::/48 filtered
> Network not in table
>
> bird> show route table master for 2620:0:6b0:ff00::20 filtered
> Network not in table
>
> Why will the 'show route' only show this filtered route using 'bgp_path' and not directly using 'for'?  This route is filtered in the 'master' table and there are no Pipes being used.  Am I misusing the 'filtered' option?
>
> Thank you for looking.
>
> --
> Terra