ipv4 table dn42v4;
ipv6 table dn42v6;

function dn42_is_valid_network() {
  return net ~ [
    172.20.0.0/14+
  ];
}

function dn42_is_valid_network_v6() {
  return net ~ [
    fd00::/8+
  ];
}

protocol pipe dn42v4_sync {
  table dn42v4;
  peer table master4;
  export filter {
    if bgp_large_community ~ [(DN42_ASN, 3,*)] then reject;
    accept;
    };
}

protocol pipe dn42v6_sync {
  table dn42v6;
  peer table master6;
  export filter {
    if bgp_large_community ~ [(DN42_ASN, 3,*)] then reject;
    accept;
    };
}

function dn42_is_self_net() {
  return net ~ [
    172.20.21.0/26+
  ];
}

protocol static route_dn42_export_v4 {
    route 172.20.21.0/26 reject; 

    ipv4 {
        table dn42v4;
        import filter {
            bgp_large_community.add((DN42_ASN,3,0));# 不允许导出到内核
            bgp_large_community.add((DN42_ASN,1,0));# 不允许传输到ibgp
            bgp_large_community.add((DN42_ASN,200,0));# 传输到Ebgp
            accept;
        };
        export none;
    };
}


function dn42_is_self_net_v6() {
  return net ~ [
    fde8:936e:ee29::/48+
    ];
}

protocol static route_dn42_export_v6 {
    route fde8:936e:ee29::/48 reject; 
    ipv6 {
        table dn42v6;
        import filter {
            bgp_large_community.add((DN42_ASN,3,0));# 不允许导出到内核
            bgp_large_community.add((DN42_ASN,1,0));# 不允许传输到ibgp
            bgp_large_community.add((DN42_ASN,200,0));# 传输到Ebgp
            accept;
        };
        export none;
    };
}