Please see file attached to related issue. There can be found sources for new Ant task <server:addresses> which works as follows:

Input attributes: ${env} - environment properties prefix with preset addresses, if not set no preset values are used, ${prop} - new properties prefix, prefix is extended by number 0..n, ${ifaces} - number of interfaces to find, if there is not enough interfaces an exception is thrown.

x = 1;
while (${env} <> "" && MYTESTIP_x <> "") {
 ${prop} + (x - 1) = MYTESTIP_x; // this means for ex. jboss.server.iface.(x - 1) = ...
 x++;
}
while (x <= ${ifaces}) {
 ${prop} + (x - 1) = fetch_next_interface_from_NetworkInterface();
 x++;
}