Couldn't announce the prefix

Hi, bird user I want to export 2602:feda:ab4::/48. I wrote 「if bgp_export() then accept」 in the BGP template, but it was not exported to BGP correctly. But bgp_export() outputs 2602:feda:ab4::/48, Please see the picture below. [image: image.png] [image: image.png] [image: image.png] Also what kind of case BGP will not export the prefix? I couldn't find it in the documentation.