simple filters question

[John Jensen]

Hi,

We're about to migrate our exchange to a /23 and we're likely going to do
it over time. I have a simple filter in place to check and make sure that
the NEXT_HOP is within our exchange's subnet. Originally it looked like
this:

function check_ixp_next_hop(ip nexthop)
prefix ixpnet;
{
  ixpnet = x.x.x.x/24;
  if ! (nexthop ~ ixpnet) then return false;
  return true;
}


And then within the inbound filter for each peer's ASN:

if ! (check_ixp_next_hop(bgp_next_hop)) then reject;


Since we're going to be caring about two distinct prefixes while we perform
the migration, I changed the filter to look like this:

function check_ixp_next_hop(ip nexthop)
prefix set ixpnet;
{
  ixpnet = [ x.x.x.x/24, y.y.y.y/23 ];
  if ! (nexthop ~ ixpnet) then return false;
  return true;
}

However I'm getting the following errors in the log:

07-11-2013 12:33:00 <ERR> filters, line 61: ~ applied on unknown type pair
07-11-2013 12:33:00 <ERR> filters, line 61: ~ applied on unknown type pair
07-11-2013 12:33:04 <ERR> filters, line 61: ~ applied on unknown type pair


Am I missing something?

Thanks,

-JJ
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://trubka.network.cz/pipermail/bird-users/attachments/20131107/51768129/attachment.html>