bird >=2.0.4 Stack underflow and most routes become filtered

[Maria Matějka]

Will check it, thanks for your report.
Maria

On August 24, 2019 12:22:10 AM GMT+02:00, "Дружок 1" <arkhipax at gmail.com> wrote:
>Hi!
>..
>/var/log/bird.log
>2019-08-22 15:38:38.604 <ERR> filters, line 1023: Stack underflow
>2019-08-22 18:02:27.157 <ERR> filters, line 511: Stack underflow
>2019-08-22 18:02:30.616 <ERR> filters, line 0: Stack underflow....
>...
>function bgp_in(int peer_as; prefix set peer_nets)
>{
>        if ! (avoid_martians()) then return false;
>        if ! (net ~ peer_nets) then return false;
>        if (bgp_path.first != peer_as ) then return false;
>   #   if (is_black()) then return true;
>   #   if net.len > 24 then return false;
>        return true;
>}
>..
>define DataClub_nets = [
>    46.183.216.0/21{21,32} <http://46.183.216.0/21%7B21,32%7D>,
>    84.38.128.0/24{24,32} <http://84.38.128.0/24%7B24,32%7D>,
>    84.38.130.0/24{24,32} <http://84.38.130.0/24%7B24,32%7D>,
>    84.38.131.0/24{24,32} <http://84.38.131.0/24%7B24,32%7D>,
>    84.38.132.0/24{24,32} <http://84.38.132.0/24%7B24,32%7D>,
>    84.38.134.0/24{24,32} <http://84.38.134.0/24%7B24,32%7D>,
>    84.38.135.0/24{24,32} <http://84.38.135.0/24%7B24,32%7D>,
>    109.248.147.0/24{24,32} <http://109.248.147.0/24%7B24,32%7D>,
>    109.248.148.0/24{24,32} <http://109.248.148.0/24%7B24,32%7D>,
>    109.248.149.0/24{24,32} <http://109.248.149.0/24%7B24,32%7D>,
>    185.220.116.0/24{24,32} <http://185.220.116.0/24%7B24,32%7D>,
>    185.220.117.0/24{24,32} <http://185.220.117.0/24%7B24,32%7D>,
>    185.220.118.0/24{24,32} <http://185.220.118.0/24%7B24,32%7D>,
>    194.165.16.0/23{23,32} <http://194.165.16.0/23%7B23,32%7D>
>];
>..
>protocol bgp DataClub from PEERS {
>        description "DataClub/52048/as-dataclub";
>        neighbor 193.27.39.4 as 52048;
>        ipv4 {
>                import where bgp_in(52048, DataClub_nets);
>                export where bgp_out(52048, 64004);
>        };
>}
>...
>
>I redid the configuration something like
>...
>ipv4 { import filter myfilter; ..
>...
>then I issue test "show route filter myfilter" and get all nets. But in
>fact, all these routes were filtered.
>And, finally, only "accept" remained in the filter - this method
>unfiltered
>routes.
>Bug, feature?
>P.S.:  Bird <= 2.0.3 is OK.

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://trubka.network.cz/pipermail/bird-users/attachments/20190825/33101caf/attachment.htm>