define tnet = fdb1:4242:3538:a000::/52;

function is_tnet() -> bool
{
  return net ~ tnet;
}

roa6 table dn42_roa;

protocol static {
    roa6 { table dn42_roa; };
    include "/etc/bird/dn42_roa_bird2_6.conf";
};

function dn42_is_valid_network() -> bool
{
  return net ~ [
    fd00::/8{44,64} # ULA address space as per RFC 4193
  ];
}