Is there any way to set different communities while importing prefixes?

[Valery Lutoshkin]

Hi,

I use Bird 2.0.9 to spread a special list of prefixes (about 100k) via BGP
to an unknown list of users (around 1k).

The prefixes are supposed to be marked by different communities (6 right
now) and receivers should be able to filter them by those communities to
use only prefixes they want.


While only one community should be attached to the prefix, I use just 6
different files with prefixes and attach the proper community in the import
processes like this:

protocol static importbgp_1 {

        ipv4 { import filter {bgp_community.add((65000,1)); accept;}; };

        include "/tmp/prefixes_1.txt";

}

Lines in the prefixes_1 file look like this:

route 1.3.7.7/32 unreachable;


But when I need to attach several communities to the prefixes, I have to
create 2^6=64 different static protocols and generate 64 different files.

And for 8 communities I will have to create 256 protocols and files.


If I could add some marks to routes in the imported file, I would use those
marks in the import filter to attach communities to the prefix.


But if I’m not mistaken, there is no way of doing that.


If there is a different solution to this issue that I’m unaware of, would
you please let me know.


Best regards,

Valery
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