protocol ospf v3 ospf_gpvm {
    ipv4 {
        import where is_self_net() && source != RTS_BGP;
        export where is_self_net() && source != RTS_BGP;
    };
    include "/etc/bird/igp/ospf/ospf_backbone.conf";
};

protocol ospf v3 ospf6_gpvm {
    ipv6 {
        import where is_self_net_v6() && source != RTS_BGP;
        export where is_self_net_v6() && source != RTS_BGP;
    };
    include "/etc/bird/igp/ospf/ospf_backbone.conf";
};