Hi there, I'm wondering if anyone has seen excessive filter logging with 3.0.0/3.0.1? Comparing log output from tests done on v2 vs v3, I'm seeing 2G+ log files generated in 30s on v3, when in v2 the log files were only a few hundred Kb in size at most after some time. I have router R1 and R2 connected via BGP. I have a couple of filters which log if a prefix has been filtered or accepted, I've included my log configuration and filter below. Here is the log config I'm using... log "/var/log/bird.log" { info, warning, fatal }; debug protocols { states, routes, filters, interfaces, events }; timeformat base iso long; timeformat log iso long; timeformat protocol iso long; timeformat route iso long; Here is the test filter I created to test... define DEFAULT_ROUTE_V4 = 0.0.0.0/0; define DEFAULT_ROUTE_V6 = ::/0; function is_default(string filter_name) -> bool { if ((net.type = NET_IP4 && net = DEFAULT_ROUTE_V4) || (net.type = NET_IP6 && net = DEFAULT_ROUTE_V6)) then return true; return false; } function bgp_accept_bgp(string filter_name) -> bool { if (is_default()) then return false; print filter_name, " [bgp_accept_bgp] Accepting BGP route ", net, " from ", proto; accept; } filter f_bgp_master_export string filter_name; { filter_name = "f_bgp_master_export"; bgp_accept_bgp(filter_name); reject; }; Here is the odd behavior I"m observing in v3... 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.111.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.112.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.113.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.201.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.131.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.132.0.0/24 from bgp4_AS65000_r1 repeating very many times per second... 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.111.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.112.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.113.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.201.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.131.0.0/24 from bgp4_AS65000_r1 2025-02-24 15:21:04 [0002] <INFO> f_bgp_master_export [bgp_accept_bgp] Accepting BGP route 100.132.0.0/24 from bgp4_AS65000_r1 In about 30s my log file grew to 2.1GB before I stopped the process. Perhaps I'm missing something in the migration guide? any help would be greatly appreciated. Kind Regards Nigel