{ field => 'ip_addr', value_callback => \&ip_addr },
{ field => 'sectornum', value_callback => \§ornum },
{ field => 'mac_addr', type=>'mac_addr', value_callback => \&mac_addr },
{ field => 'ip_addr', value_callback => \&ip_addr },
{ field => 'sectornum', value_callback => \§ornum },
{ field => 'mac_addr', type=>'mac_addr', value_callback => \&mac_addr },