+my %cidrcache = ();
+sub cache_cidrlookup {
+ my ($addr, $net) = @_;
+ my $key = $addr . " " . $net;
+
+ if (!exists($cidrcache{$key})) {
+ $cidrcache{$key} = Net::CIDR::cidrlookup($addr, $net);
+ }
+ return $cidrcache{$key};
+}
+
+my %rangecache = ();
+sub cache_cidrrange {
+ my ($net) = @_;
+
+ if (!exists($rangecache{$net})) {
+ ($rangecache{$net}) = Net::CIDR::cidr2range($net);
+ }
+
+ return $rangecache{$net};
+}
+