Hello, I am trying to increase the MED attribute in an export filter: bgp_med = bgp_med + 100; This action fails with the following error messages: 2019-11-12 22:54:54.522 <ERR> filters, line 18: Argument 1 of instruction FI_ADD must be of type T_INT, got 0x00 I have tested bird 2.0.4 and 2.0.7. The issue occurs in both versions. I am using gentoo with gcc 9.2.0. Am I missing something or is this a bug? Regards, Bene -- Karlsruher Institut für Technologie (KIT) Steinbuch Centre for Computing (SCC) Benedikt Neuffer Netze und Telekommunikation (NET) Hermann-von-Helmholtz-Platz 1 Gebäude 442 Raum 185 76344 Eggenstein-Leopoldshafen Telefon: +49 721 608-24502 Fax: +49 721 608-47763 E-Mail: benedikt.neuffer@kit.edu Web: https://www.scc.kit.edu Sitz der Körperschaft: Kaiserstraße 12, 76131 Karlsruhe KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft Signaturversion: 19.1.0 beta