protocol ospf v3 ospf_ipv4 {
    ipv4 {
        table ospf4;
        import all;
        export filter { 
            if bgp_large_community !~ [(UNET_ASN, 301,0)] then reject;
            accept;
        };
        import limit 1000 action block;
    };
    area 0 {
        interface "pccw1" {
            cost 5;
            password "114514";
        };

    };
}


protocol static route_ospf_export_v4 {
    route 10.188.3.0/24 reject;
    ipv4 {
        table ospf4;
        import filter {
            bgp_large_community.add((UNET_ASN,301,0));# 允许导出至OSPF
            bgp_large_community.add((UNET_ASN,3,0));# 不允许导出到内核
            accept;
        };
        export none;
    };
}