I'm the CPAN owner of Net::Patricia (perl-Net-Patricia.rpm) and it currently supports IPv4 and IPv6. Both are done with specialized data structures. I'm looking for something that handles a more generic binary data blob... so that I could have arbitrary searches. For instance, in Perl, I could seed the tree with: $key = join('.', reverse(split(/\./, $domain))); $keylen = length($key) * 8; and then do rDNS tree searches for hostnames. One could similarly imagine converting phone numbers into BCD and doing E.164 searches in such a tree. Net::Patricia currently uses a modified version of libpatricia from the MERIT Radius or SNMP code (forget which)... but it only handles IPv6 and IPv4 as I said. Ideally it would be an external library that I could just link to. Anyone have a pointer? Thanks, -Philip -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel