Hello, I've found confused behaviour "show route filter". I have basic test setup with some filters, see attachment. With this setup, i've got this result: bird> show route export test 1.0.0.0/20 blackhole [static_bgp 18:22] * (1200) bird> show route filter upstream_out bird> and error log shows: 12-05-2013 18:23:24 <ERR> filters, line 28: Prefix or path expected When i commented out line "if bgp_path.len > 64 then return false;" in "function rt_export_ebgp()", i've got expected result: bird> show route export test 1.0.0.0/20 blackhole [static_bgp 18:22] * (1200) bird> bird> show route filter upstream_out 1.0.0.0/20 blackhole [static_bgp 18:22] * (1200) Unexpected behaviour (for me) arrive when filter contain whatever with BGP PATH and exported routes are static, without bgp path. For example, if i add "bgp_path.prepend(65001);" to "filter usptream_out", i've got same bad result again: bird> show route export test 1.0.0.0/20 blackhole [static_bgp 18:22] * (1200) bird> show route filter upstream_out bird> Is this correct behaviour? Thank you, Regards, Daniel